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Thus, food production, and compet.i.tion and diffusion between societies, led as ultimate causes, via chains of causation that differed in detail but that all involved large dense populations and sedentary living, to the proximate agents of conquest: germs, writing, technology, and centralized political organization. Because those ultimate causes developed differently on different continents, so did those agents of conquest. Hence those agents tended to arise in a.s.sociation with each other, but the a.s.sociation was not strict: for example, an empire arose without writing among the Incas, and writing with few epidemic diseases among the Aztecs. Dingiswayo's Zulus ill.u.s.trate that each of those agents contributed somewhat independently to history's pattern. Among the dozens of Zulu chiefdoms, the Mtetwa chiefdom enjoyed no advantage whatsoever of technology, writing, or germs over the other chiefdoms, which it nevertheless succeeded in defeating. Its advantage lay solely in the spheres of government and ideology. The resulting Zulu state was thereby enabled to conquer a fraction of a continent for nearly a century.

PART FOUR

AROUND THE WORLD IN FIVE CHAPTERS

CHAPTER 15

YALI'S PEOPLE



WHEN MY WIFE, MARIE, AND I WERE VACATIONING IN Australia one summer, we decided to visit a site with well-preserved Aboriginal rock paintings in the desert near the town of Menindee. While I knew of the Australian desert's reputation for dryness and summer heat, I had already spent long periods working under hot, dry conditions in the Californian desert and New Guinea savanna, so I considered myself experienced enough to deal with the minor challenges we would face as tourists in Australia. Carrying plenty of drinking water, Marie and I set off at noon on a hike of a few miles to the paintings. Australia one summer, we decided to visit a site with well-preserved Aboriginal rock paintings in the desert near the town of Menindee. While I knew of the Australian desert's reputation for dryness and summer heat, I had already spent long periods working under hot, dry conditions in the Californian desert and New Guinea savanna, so I considered myself experienced enough to deal with the minor challenges we would face as tourists in Australia. Carrying plenty of drinking water, Marie and I set off at noon on a hike of a few miles to the paintings.

The trail from the ranger station led uphill, under a cloudless sky, through open terrain offering no shade whatsoever. The hot, dry air that we were breathing reminded me of how it had felt to breathe while sitting in a Finnish sauna. By the time we reached the cliff site with the paintings, we had finished our water. We had also lost our interest in art, so we pushed on uphill, breathing slowly and regularly. Presently I noticed a bird that was unmistakably a species of babbler, but it seemed enormous compared with any known babbler species. At that point, I realized that I was experiencing heat hallucinations for the first time in my life. Marie and I decided that we had better head straight back.

Both of us stopped talking. As we walked, we concentrated on listening to our breathing, calculating the distance to the next landmark, and estimating the remaining time. My mouth and tongue were now dry, and Marie's face was red. When we at last reached the air-conditioned ranger station, we sagged into chairs next to the water cooler, drank down the cooler's last half-gallon of water, and asked the ranger for another bottle. Sitting there exhausted, both physically and emotionally, I reflected that the Aborigines who had made those paintings had somehow spent their entire lives in that desert without air-conditioned retreats, managing to find food as well as water.

To white Australians, Menindee is famous as the base camp for two whites who had suffered worse from the desert's dry heat over a century earlier: the Irish policeman Robert Burke and the English astronomer William Wills, ill-fated leaders of the first European expedition to cross Australia from south to north. Setting out with six camels packing food enough for three months, Burke and Wills ran out of provisions while in the desert north of Menindee. Three successive times, they encountered and were rescued by well-fed Aborigines whose home was that desert, and who plied the explorers with fish, fern cakes, and roasted fat rats. But then Burke foolishly shot his pistol at one of the Aborigines, whereupon the whole group fled. Despite their big advantage over the Aborigines in possessing guns with which to hunt, Burke and Wills starved, collapsed, and died within a month after the Aborigines' departure.

My wife's and my experience at Menindee, and the fate of Burke and Wills, made vivid for me the difficulties of building a human society in Australia. Australia stands out from all the other continents: the differences between Eurasia, Africa, North America, and South America fade into insignificance compared with the differences between Australia and any of those other landma.s.ses. Australia is by far the driest, smallest, flattest, most infertile, climatically most unpredictable, and biologically most impoverished continent. It was the last continent to be occupied by Europeans. Until then, it had supported the most distinctive human societies, and the least numerous human population, of any continent.

Australia thus provides a crucial test of theories about intercontinental differences in societies. It had the most distinctive environment, and also the most distinctive societies. Did the former cause the latter? If so, how? Australia is the logical continent with which to begin our around-the-world tour, applying the lessons of Parts 2 and 3 to understanding the differing histories of all the continents.

MOST LAYPEOPLE WOULD describe as the most salient feature of Native Australian societies their seeming "backwardness." Australia is the sole continent where, in modern times, all native peoples still lived without any of the hallmarks of so-called civilization-without farming, herding, metal, bows and arrows, substantial buildings, settled villages, writing, chiefdoms, or states. Instead, Australian Aborigines were nomadic or seminomadic hunter-gatherers, organized into bands, living in temporary shelters or huts, and still dependent on stone tools. During the last 13,000 years less cultural change has acc.u.mulated in Australia than in any other continent. The prevalent European view of Native Australians was already typified by the words of an early French explorer, who wrote, "They are the most miserable people of the world, and the human beings who approach closest to brute beasts." describe as the most salient feature of Native Australian societies their seeming "backwardness." Australia is the sole continent where, in modern times, all native peoples still lived without any of the hallmarks of so-called civilization-without farming, herding, metal, bows and arrows, substantial buildings, settled villages, writing, chiefdoms, or states. Instead, Australian Aborigines were nomadic or seminomadic hunter-gatherers, organized into bands, living in temporary shelters or huts, and still dependent on stone tools. During the last 13,000 years less cultural change has acc.u.mulated in Australia than in any other continent. The prevalent European view of Native Australians was already typified by the words of an early French explorer, who wrote, "They are the most miserable people of the world, and the human beings who approach closest to brute beasts."

Yet, as of 40,000 years ago, Native Australian societies enjoyed a big head start over societies of Europe and the other continents. Native Australians developed some of the earliest known stone tools with ground edges, the earliest hafted stone tools (that is, stone ax heads mounted on handles), and by far the earliest watercraft, in the world. Some of the oldest known painting on rock surfaces comes from Australia. Anatomically modern humans may have settled Australia before they settled western Europe. Why, despite that head start, did Europeans end up conquering Australia, rather than vice versa?

Within that question lies another. During the Pleistocene Ice Ages, when much ocean water was sequestered in continental ice sheets and sea level dropped far below its present stand, the shallow Arafura Sea now separating Australia from New Guinea was low, dry land. With the melting of ice sheets between around 12,000 and 8,000 years ago, sea level rose, that low land became flooded, and the former continent of Greater Australia became sundered into the two hemi-continents of Australia and New Guinea (Figure 15.1 on Chapter 15).

The human societies of those two formerly joined landma.s.ses were in modern times very different from each other. In contrast to everything that I just said about Native Australians, most New Guineans, such as Yali's people, were farmers and swineherds. They lived in settled villages and were organized politically into tribes rather than bands. All New Guineans had bows and arrows, and many used pottery. New Guineans tended to have much more substantial dwellings, more seaworthy boats, and more numerous and more varied utensils than did Australians. As a consequence of being food producers instead of hunter-gatherers, New Guineans lived at much higher average population densities than Australians: New Guinea has only one-tenth of Australia's area but supported a native population several times that of Australia's.

Why did the human societies of the larger landma.s.s derived from Pleistocene Greater Australia remain so "backward" in their development, while the societies of the smaller landma.s.s "advanced" much more rapidly? Why didn't all those New Guinea innovations spread to Australia, which is separated from New Guinea by only 90 miles of sea at Torres Strait? From the perspective of cultural anthropology, the geographic distance between Australia and New Guinea is even less than 90 miles, because Torres Strait is sprinkled with islands inhabited by farmers using bows and arrows and culturally resembling New Guineans. The largest Torres Strait island lies only 10 miles from Australia. Islanders carried on a lively trade with Native Australians as well as with New Guineans. How could two such different cultural universes maintain themselves across a calm strait only 10 miles wide and routinely traversed by canoes?

Compared with Native Australians, New Guineans rate as culturally "advanced." But most other modern people consider even New Guineans "backward." Until Europeans began to colonize New Guinea in the late 19th century, all New Guineans were nonliterate, dependent on stone tools, and politically not yet organized into states or (with few exceptions) chiefdoms. Granted that New Guineans had "progressed" beyond Native Australians, why had they not yet "progressed" as far as many Eurasians, Africans, and Native Americans? Thus, Yali's people and their Australian cousins pose a puzzle inside a puzzle.

When asked to account for the cultural "backwardness" of Aboriginal Australian society, many white Australians have a simple answer: supposed deficiencies of the Aborigines themselves. In facial structure and skin color, Aborigines certainly look different from Europeans, leading some late-19th century authors to consider them a missing link between apes and humans. How else can one account for the fact that white English colonists created a literate, food-producing, industrial democracy, within a few decades of colonizing a continent whose inhabitants after more than 40,000 years were still nonliterate hunter-gatherers? It is especially striking that Australia has some of the world's richest iron and aluminum deposits, as well as rich reserves of copper, tin, lead, and zinc. Why, then, were Native Australians still ignorant of metal tools and living in the Stone Age?

It seems like a perfectly controlled experiment in the evolution of human societies. The continent was the same; only the people were different. Ergo, the explanation for the differences between Native Australian and European-Australian societies must lie in the different people composing them. The logic behind this racist conclusion appears compelling. We shall see, however, that it contains a simple error.

AS THE FIRST step in examining this logic, let us examine the origins of the peoples themselves. Australia and New Guinea were both occupied by at least 40,000 years ago, at a time when they were both still joined as Greater Australia. A glance at a map (Figure 15.1) suggests that the colonists must have originated ultimately from the nearest continent, Southeast Asia, by island hopping through the Indonesian Archipelago. This conclusion is supported by genetic relationships between modern Australians, New Guineans, and Asians, and by the survival today of a few populations of somewhat similar physical appearance in the Philippines, Malay Peninsula, and Andaman Islands off Myanmar. step in examining this logic, let us examine the origins of the peoples themselves. Australia and New Guinea were both occupied by at least 40,000 years ago, at a time when they were both still joined as Greater Australia. A glance at a map (Figure 15.1) suggests that the colonists must have originated ultimately from the nearest continent, Southeast Asia, by island hopping through the Indonesian Archipelago. This conclusion is supported by genetic relationships between modern Australians, New Guineans, and Asians, and by the survival today of a few populations of somewhat similar physical appearance in the Philippines, Malay Peninsula, and Andaman Islands off Myanmar.

Once the colonists had reached the sh.o.r.es of Greater Australia, they spread quickly over the whole continent to occupy even its farthest reaches and most inhospitable habitats. By 40,000 years ago, fossils and stone tools attest to their presence in Australia's southwestern corner; by 35,000 years ago, in Australia's southeastern corner and Tasmania, the corner of Australia most remote from the colonists' likely beachhead in western Australia or New Guinea (the parts nearest Indonesia and Asia); and by 30,000 years ago, in the cold New Guinea highlands. All of those areas could have been reached overland from a western beachhead. However, the colonization of both the Bismarck and the Solomon Archipelagoes northeast of New Guinea, by 35,000 years ago, required further overwater crossings of dozens of miles. The occupation could have been even more rapid than that apparent spread of dates from 40,000 to 30,000 years ago, since the various dates hardly differ within the experimental error of the radiocarbon method.

At the Pleistocene times when Australia and New Guinea were initially occupied, the Asian continent extended eastward to incorporate the modern islands of Borneo, Java, and Bali, nearly 1,000 miles nearer to Australia and New Guinea than Southeast Asia's present margin. However, at least eight channels up to 50 miles wide still remained to be crossed in getting from Borneo or Bali to Pleistocene Greater Australia. Forty thousand years ago, those crossings may have been achieved by bamboo rafts, low-tech but seaworthy watercraft still in use in coastal South China today. The crossings must nevertheless have been difficult, because after that initial landfall by 40,000 years ago the archaeological record provides no compelling evidence of further human arrivals in Greater Australia from Asia for tens of thousands of years. Not until within the last few thousand years do we encounter the next firm evidence, in the form of the appearance of Asian-derived pigs in New Guinea and Asian-derived dogs in Australia.

Thus, the human societies of Australia and New Guinea developed in substantial isolation from the Asian societies that founded them. That isolation is reflected in languages spoken today. After all those millennia of isolation, neither modern Aboriginal Australian languages nor the major group of modern New Guinea languages (the so-called Papuan languages) exhibit any clear relationships with any modern Asian languages.

The isolation is also reflected in genes and physical anthropology. Genetic studies suggest that Aboriginal Australians and New Guinea highlanders are somewhat more similar to modern Asians than to peoples of other continents, but the relationship is not a close one. In skeletons and physical appearance, Aboriginal Australians and New Guineans are also distinct from most Southeast Asian populations, as becomes obvious if one compares photos of Australians or New Guineans with those of Indonesians or Chinese. Part of the reason for all these differences is that the initial Asian colonists of Greater Australia have had a long time in which to diverge from their stay-at-home Asian cousins, with only limited genetic exchanges during most of that time. But probably a more important reason is that the original Southeast Asian stock from which the colonists of Greater Australia were derived has by now been largely replaced by other Asians expanding out of China.

Aboriginal Australians and New Guineans have also diverged genetically, physically, and linguistically from each other. For instance, among the major (genetically determined) human blood groups, groups B of the so-called ABO system and S of the MNS system occur in New Guinea as well as in most of the rest of the world, but both are virtually absent in Australia. The tightly coiled hair of most New Guineans contrasts with the straight or wavy hair of most Australians. Australian languages and New Guinea's Papuan languages are unrelated not only to Asian languages but also to each other, except for some spread of vocabulary in both directions across Torres Strait.

All that divergence of Australians and New Guineans from each other reflects lengthy isolation in very different environments. Since the rise of the Arafura Sea finally separated Australia and New Guinea from each other around 10,000 years ago, gene exchange has been limited to tenuous contact via the chain of Torres Strait islands. That has allowed the populations of the two hemi-continents to adapt to their own environments. While the savannas and mangroves of coastal southern New Guinea are fairly similar to those of northern Australia, other habitats of the hemi-continents differ in almost all major respects.

Here are some of the differences. New Guinea lies nearly on the equator, while Australia extends far into the temperate zones, reaching almost 40 degrees south of the equator. New Guinea is mountainous and extremely rugged, rising to 16,500 feet and with glaciers capping the highest peaks, while Australia is mostly low and flat-94 percent of its area lies below 2,000 feet of elevation. New Guinea is one of the wettest areas on Earth, Australia one of the driest. Most of New Guinea receives over 100 inches of rain annually, and much of the highlands receives over 200 inches, while most of Australia receives less than 20 inches. New Guinea's equatorial climate varies only modestly from season to season and year to year, but Australia's climate is highly seasonal and varies from year to year far more than that of any other continent. As a result, New Guinea is laced with permanent large rivers, while Australia's permanently flowing rivers are confined in most years to eastern Australia, and even Australia's largest river system (the Murray-Darling) has ceased flowing for months during droughts. Most of New Guinea's land area is clothed in dense rain forest, while most of Australia's supports only desert and open dry woodland.

New Guinea is covered with young fertile soil, as a consequence of volcanic activity, glaciers repeatedly advancing and retreating and scouring the highlands, and mountain streams carrying huge quant.i.ties of silt to the lowlands. In contrast, Australia has by far the oldest, most infertile, most nutrient-leached soils of any continent, because of Australia's little volcanic activity and its lack of high mountains and glaciers. Despite having only one-tenth of Australia's area, New Guinea is home to approximately as many mammal and bird species as is Australia-a result of New Guinea's equatorial location, much higher rainfall, much greater range of elevations, and greater fertility. All of those environmental differences influenced the two hemi-continents' very disparate cultural histories, which we shall now consider.

THE EARLIEST AND most intensive food production, and the densest populations, of Greater Australia arose in the highland valleys of New Guinea at alt.i.tudes between 4,000 and 9,000 feet above sea level. Archaeological excavations uncovered complex systems of drainage ditches dating back to 9,000 years ago and becoming extensive by 6,000 years ago, as well as terraces serving to retain soil moisture in drier areas. The ditch systems were similar to those still used today in the highlands to drain swampy areas for use as gardens. By around 5,000 years ago, pollen a.n.a.lyses testify to widespread deforestation of highland valleys, suggesting forest clearance for agriculture. most intensive food production, and the densest populations, of Greater Australia arose in the highland valleys of New Guinea at alt.i.tudes between 4,000 and 9,000 feet above sea level. Archaeological excavations uncovered complex systems of drainage ditches dating back to 9,000 years ago and becoming extensive by 6,000 years ago, as well as terraces serving to retain soil moisture in drier areas. The ditch systems were similar to those still used today in the highlands to drain swampy areas for use as gardens. By around 5,000 years ago, pollen a.n.a.lyses testify to widespread deforestation of highland valleys, suggesting forest clearance for agriculture.

Today, the staple crops of highland agriculture are the recently introduced sweet potato, along with taro, bananas, yams, sugarcane, edible gra.s.s stems, and several leafy vegetables. Because taro, bananas, and yams are native to Southeast Asia, an undoubted site of plant domestication, it used to be a.s.sumed that New Guinea highland crops other than sweet potatoes arrived from Asia. However, it was eventually realized that the wild ancestors of sugarcane, the leafy vegetables, and the edible gra.s.s stems are New Guinea species, that the particular types of bananas grown in New Guinea have New Guinea rather than Asian wild ancestors, and that taro and some yams are native to New Guinea as well as to Asia. If New Guinea agriculture had really had Asian origins, one might have expected to find highland crops derived unequivocally from Asia, but there are none. For those reasons it is now generally acknowledged that agriculture arose indigenously in the New Guinea highlands by domestication of New Guinea wild plant species.

New Guinea thus joins the Fertile Crescent, China, and a few other regions as one of the world's centers of independent origins of plant domestication. No remains of the crops actually being grown in the highlands 6,000 years ago have been preserved in archaeological sites. However, that is not surprising, because modern highland staple crops are plant species that do not leave archaeologically visible residues except under exceptional conditions. Hence it seems likely that some of them were also the founding crops of highland agriculture, especially as the ancient drainage systems preserved are so similar to the modern drainage systems used for growing taro.

The three unequivocally foreign elements in New Guinea highland food production as seen by the first European explorers were chickens, pigs, and sweet potatoes. Chickens and pigs were domesticated in Southeast Asia and introduced around 3,600 years ago to New Guinea and most other Pacific islands by Austronesians, a people of ultimately South Chinese origin whom we shall discuss in Chapter 17. (Pigs may have arrived earlier.) As for the sweet potato, native to South America, it apparently reached New Guinea only within the last few centuries, following its introduction to the Philippines by Spaniards. Once established in New Guinea, the sweet potato overtook taro as the highland's leading crop, because of its shorter time required to reach maturity, higher yields per acre, and greater tolerance of poor soil conditions.

The development of New Guinea highland agriculture must have triggered a big population explosion thousands of years ago, because the highlands could have supported only very low population densities of hunter-gatherers after New Guinea's original megafauna of giant marsupials had been exterminated. The arrival of the sweet potato triggered a further explosion in recent centuries. When Europeans first flew over the highlands in the 1930s, they were astonished to see below them a landscape similar to Holland's. Broad valleys were completely deforested and dotted with villages, and drained and fenced fields for intensive food production covered entire valley floors. That landscape testifies to the population densities achieved in the highlands by farmers with stone tools.

Steep terrain, persistent cloud cover, malaria, and risk of drought at lower elevations confine New Guinea highland agriculture to elevations above about 4,000 feet. In effect, the New Guinea highlands are an island of dense farming populations thrust up into the sky and surrounded below by a sea of clouds. Lowland New Guineans on the seacoast and rivers are villagers depending heavily on fish, while those on dry ground away from the coast and rivers subsist at low densities by slash-and-burn agriculture based on bananas and yams, supplemented by hunting and gathering. In contrast, lowland New Guinea swamp dwellers live as nomadic hunter-gatherers dependent on the starchy pith of wild sago palms, which are very productive and yield three times more calories per hour of work than does gardening. New Guinea swamps thus provide a clear instance of an environment where people remained hunter-gatherers because farming could not compete with the hunting-gathering lifestyle.

The sago eaters persisting in lowland swamps exemplify the nomadic hunter-gatherer band organization that must formerly have characterized all New Guineans. For all the reasons that we discussed in Chapters 13 and 14, the farmers and the fishing peoples were the ones to develop more-complex technology, societies, and political organization. They live in permanent villages and tribal societies, often led by a big-man. Some of them construct large, elaborately decorated, ceremonial houses. Their great art, in the form of wooden statues and masks, is prized in museums around the world.

NEW GUINEA THUS became the part of Greater Australia with the most-advanced technology, social and political organization, and art. However, from an urban American or European perspective, New Guinea still rates as "primitive" rather than "advanced." Why did New Guineans continue to use stone tools instead of developing metal tools, remain nonliterate, and fail to organize themselves into chiefdoms and states? It turns out that New Guinea had several biological and geographic strikes against it. became the part of Greater Australia with the most-advanced technology, social and political organization, and art. However, from an urban American or European perspective, New Guinea still rates as "primitive" rather than "advanced." Why did New Guineans continue to use stone tools instead of developing metal tools, remain nonliterate, and fail to organize themselves into chiefdoms and states? It turns out that New Guinea had several biological and geographic strikes against it.

First, although indigenous food production did arise in the New Guinea highlands, we saw in Chapter 8 that it yielded little protein. The dietary staples were low-protein root crops, and production of the sole domesticated animal species (pigs and chickens) was too low to contribute much to people's protein budgets. Since neither pigs nor chickens can be harnessed to pull carts, highlanders remained without sources of power other than human muscle power, and also failed to evolve epidemic diseases to repel the eventual European invaders.

A second restriction on the size of highland populations was the limited available area: the New Guinea highlands have only a few broad valleys, notably the Wahgi and Baliem Valleys, capable of supporting dense populations. Still a third limitation was the reality that the mid-montane zone between 4,000 and 9,000 feet was the sole alt.i.tudinal zone in New Guinea suitable for intensive food production. There was no food production at all in New Guinea alpine habitats above 9,000 feet, little on the hillslopes between 4,000 and 1,000 feet, and only low-density slash-and-burn agriculture in the lowlands. Thus, large-scale economic exchanges of food, between communities at different alt.i.tudes specializing in different types of food production, never developed in New Guinea. Such exchanges in the Andes, Alps, and Himalayas not only increased population densities in those areas, by providing people at all alt.i.tudes with a more balanced diet, but also promoted regional economic and political integration.

For all these reasons, the population of traditional New Guinea never exceeded 1,000,000 until European colonial governments brought Western medicine and the end of intertribal warfare. Of the approximately nine world centers of agricultural origins that we discussed in Chapter 5, New Guinea remained the one with by far the smallest population. With a mere 1,000,000 people, New Guinea could not develop the technology, writing, and political systems that arose among populations of tens of millions in China, the Fertile Crescent, the Andes, and Mesoamerica.

New Guinea's population is not only small in aggregate, but also fragmented into thousands of micropopulations by the rugged terrain: swamps in much of the lowlands, steep-sided ridges and narrow canyons alternating with each other in the highlands, and dense jungle swathing both the lowlands and the highlands. When I am engaged in biological exploration in New Guinea, with teams of New Guineans as field a.s.sistants, I consider excellent progress to be three miles per day even if we are traveling over existing trails. Most highlanders in traditional New Guinea never went more than 10 miles from home in the course of their lives.

Those difficulties of terrain, combined with the state of intermittent warfare that characterized relations between New Guinea bands or villages, account for traditional New Guinea's linguistic, cultural, and political fragmentation. New Guinea has by far the highest concentration of languages in the world: 1,000 out of the world's 6,000 languages, crammed into an area only slightly larger than that of Texas, and divided into dozens of language families and isolated languages as different from each other as English is from Chinese. Nearly half of all New Guinea languages have fewer than 500 speakers, and even the largest language groups (still with a mere 100,000 speakers) were politically fragmented into hundreds of villages, fighting as fiercely with each other as with speakers of other languages. Each of those microsocieties alone was far too small to support chiefs and craft specialists, or to develop metallurgy and writing.

Besides a small and fragmented population, the other limitation on development in New Guinea was geographic isolation, restricting the inflow of technology and ideas from elsewhere. New Guinea's three neighbors were all separated from New Guinea by water gaps, and until a few thousand years ago they were all even less advanced than New Guinea (especially the New Guinea highlands) in technology and food production. Of those three neighbors, Aboriginal Australians remained hunter-gatherers with almost nothing to offer New Guineans that New Guineans did not already possess. New Guinea's second neighbor was the much smaller islands of the Bismarck and the Solomon Archipelagoes to the east. That left, as New Guinea's third neighbor, the islands of eastern Indonesia. But that area, too, remained a cultural backwater occupied by hunter-gatherers for most of its history. There is no item that can be identified as having reached New Guinea via Indonesia, after the initial colonization of New Guinea over 40,000 years ago, until the time of the Austronesian expansion around 1600 B.C. B.C.

With that expansion, Indonesia became occupied by food producers of Asian origins, with domestic animals, with agriculture and technology at least as complex as New Guinea's, and with navigational skills that served as a much more efficient conduit from Asia to New Guinea. Austronesians settled on islands west and north and east of New Guinea, and in the far west and on the north and southeast coasts of New Guinea itself. Austronesians introduced pottery, chickens, and probably dogs and pigs to New Guinea. (Early archaeological surveys claimed pig bones in the New Guinea highlands by 4000 B.C. B.C., but those claims have not been confirmed.) For at least the last thousand years, trade connected New Guinea to the technologically much more advanced societies of Java and China. In return for exporting bird of paradise plumes and spices, New Guineans received Southeast Asian goods, including even such luxury items as Dong Son bronze drums and Chinese porcelain.

With time, the Austronesian expansion would surely have had more impact on New Guinea. Western New Guinea would eventually have been incorporated politically into the sultanates of eastern Indonesia, and metal tools might have spread through eastern Indonesia to New Guinea. But-that hadn't happened by A.D. A.D. 1511, the year the Portuguese arrived in the Moluccas and truncated Indonesia's separate train of developments. When Europeans reached New Guinea soon thereafter, its inhabitants were still living in bands or in fiercely independent little villages, and still using stone tools. 1511, the year the Portuguese arrived in the Moluccas and truncated Indonesia's separate train of developments. When Europeans reached New Guinea soon thereafter, its inhabitants were still living in bands or in fiercely independent little villages, and still using stone tools.

WHILE THE NEW Guinea hemi-continent of Greater Australia thus developed both animal husbandry and agriculture, the Australian hemi-continent developed neither. During the Ice Ages Australia had supported even more big marsupials than New Guinea, including diprotodonts (the marsupial equivalent of cows and rhinoceroses), giant kangaroos, and giant wombats. But all those marsupial candidates for animal husbandry disappeared in the wave of extinctions (or exterminations) that accompanied human colonization of Australia. That left Australia, like New Guinea, with no domesticable native mammals. The sole foreign domesticated mammal adopted in Australia was the dog, which arrived from Asia (presumably in Austronesian canoes) around 1500 Guinea hemi-continent of Greater Australia thus developed both animal husbandry and agriculture, the Australian hemi-continent developed neither. During the Ice Ages Australia had supported even more big marsupials than New Guinea, including diprotodonts (the marsupial equivalent of cows and rhinoceroses), giant kangaroos, and giant wombats. But all those marsupial candidates for animal husbandry disappeared in the wave of extinctions (or exterminations) that accompanied human colonization of Australia. That left Australia, like New Guinea, with no domesticable native mammals. The sole foreign domesticated mammal adopted in Australia was the dog, which arrived from Asia (presumably in Austronesian canoes) around 1500 B.C. B.C. and established itself in the wild in Australia to become the dingo. Native Australians kept captive dingos as companions, watchdogs, and even as living blankets, giving rise to the expression "five-dog night" to mean a very cold night. But they did not use dingos / dogs for food, as did Polynesians, or for cooperative hunting of wild animals, as did New Guineans. and established itself in the wild in Australia to become the dingo. Native Australians kept captive dingos as companions, watchdogs, and even as living blankets, giving rise to the expression "five-dog night" to mean a very cold night. But they did not use dingos / dogs for food, as did Polynesians, or for cooperative hunting of wild animals, as did New Guineans.

Agriculture was another nonstarter in Australia, which is not only the driest continent but also the one with the most infertile soils. In addition, Australia is unique in that the overwhelming influence on climate over most of the continent is an irregular nonannual cycle, the ENSO (acronym for E1 Nino Southern Oscillation), rather than the regular annual cycle of the seasons so familiar in most other parts of the world. Unpredictable severe droughts last for years, punctuated by equally unpredictable torrential rains and floods. Even today, with Eurasian crops and with trucks and railroads to transport produce, food production in Australia remains a risky business. Herds build up in good years, only to be killed off by drought. Any incipient farmers in Aboriginal Australia would have faced similar cycles in their own populations. If in good years they had settled in villages, grown crops, and produced babies, those large populations would have starved and died off in drought years, when the land could support far fewer people.

The other major obstacle to the development of food production in Australia was the paucity of domesticable wild plants. Even modern European plant geneticists have failed to develop any crop except macadamia nuts from Australia's native wild flora. The list of the world's potential prize cereals-the 56 wild gra.s.s species with the heaviest grains-includes only two Australian species, both of which rank near the bottom of the list (grain weight only 13 milligrams, compared with a whopping 40 milligrams for the heaviest grains elsewhere in the world). That's not to say that Australia had no potential crops at all, or that Aboriginal Australians would never have developed indigenous food production. Some plants, such as certain species of yams, taro, and arrowroot, are cultivated in southern New Guinea but also grow wild in northern Australia and were gathered by Aborigines there. As we shall see, Aborigines in the climatically most favorable areas of Australia were evolving in a direction that might have eventuated in food production. But any food production that did arise indigenously in Australia would have been limited by the lack of domesticable animals, the poverty of domesticable plants, and the difficult soils and climate.

Nomadism, the hunter-gatherer lifestyle, and minimal investment in shelter and possessions were sensible adaptations to Australia's ENSO-driven resource unpredictability. When local conditions deteriorated, Aborigines simply moved to an area where conditions were temporarily better. Rather than depending on just a few crops that could fail, they minimized risk by developing an economy based on a great variety of wild foods, not all of which were likely to fail simultaneously. Instead of having fluctuating populations that periodically outran their resources and starved, they maintained smaller populations that enjoyed an abundance of food in good years and a sufficiency in bad years.

The Aboriginal Australian subst.i.tute for food production has been termed "firestick farming." The Aborigines modified and managed the surrounding landscape in ways that increased its production of edible plants and animals, without resorting to cultivation. In particular, they intentionally burned much of the landscape periodically. That served several purposes: the fires drove out animals that could be killed and eaten immediately; fires converted dense thickets into open parkland in which people could travel more easily; the parkland was also an ideal habitat for kangaroos, Australia's prime game animal; and the fires stimulated the growth both of new gra.s.s on which kangaroos fed and of fern roots on which Aborigines themselves fed.

We think of Australian Aborigines as desert people, but most of them were not. Instead, their population densities varied with rainfall (because it controls the production of terrestrial wild plant and animal foods) and with abundance of aquatic foods in the sea, rivers, and lakes. The highest population densities of Aborigines were in Australia's wettest and most productive regions: the Murray-Darling river system of the Southeast, the eastern and northern coasts, and the southwestern corner. Those areas also came to support the densest populations of European settlers in modern Australia. The reason we think of Aborigines as desert people is simply that Europeans killed or drove them out of the most desirable areas, leaving the last intact Aboriginal populations only in areas that Europeans didn't want.

Within the last 5,000 years, some of those productive regions witnessed an intensification of Aboriginal food-gathering methods, and a buildup of Aboriginal population density. Techniques were developed in eastern Australia for rendering abundant and starchy, but extremely poisonous, cycad seeds edible, by leaching out or fermenting the poison. The previously unexploited highlands of southeastern Australia began to be visited regularly during the summer, by Aborigines feasting not only on cycad nuts and yams but also on huge hibernating aggregations of a migratory moth called the bogong moth, which tastes like a roasted chestnut when grilled. Another type of intensified food-gathering activity that developed was the freshwater eel fisheries of the Murray-Darling river system, where water levels in marshes fluctuate with seasonal rains. Native Australians constructed elaborate systems of ca.n.a.ls up to a mile and a half long, in order to enable eels to extend their range from one marsh to another. Eels were caught by equally elaborate weirs, traps set in dead-end side ca.n.a.ls, and stone walls across ca.n.a.ls with a net placed in an opening of the wall. Traps at different levels in the marsh came into operation as the water level rose and fell. While the initial construction of those "fish farms" must have involved a lot of work, they then fed many people. Nineteenth-century European observers found villages of a dozen Aboriginal houses at the eel farms, and there are archaeological remains of villages of up to 146 stone houses, implying at least seasonally resident populations of hundreds of people.

Still another development in eastern and northern Australia was the harvesting of seeds of a wild millet, belonging to the same genus as the broomcorn millet that was a staple of early Chinese agriculture. The millet was reaped with stone knives, piled into haystacks, and threshed to obtain the seeds, which were then stored in skin bags or wooden dishes and finally ground with millstones. Several of the tools used in this process, such as the stone reaping knives and grindstones, were similar to the tools independently invented in the Fertile Crescent for processing seeds of other wild gra.s.ses. Of all the food-acquiring methods of Aboriginal Australians, millet harvesting is perhaps the one most likely to have evolved eventually into crop production.

Along with intensified food gathering in the last 5,000 years came new types of tools. Small stone blades and points provided more length of sharp edge per pound of tool than the large stone tools they replaced. Hatchets with ground stone edges, once present only locally in Australia, became widespread. Sh.e.l.l fishhooks appeared within the last thousand years.

WHY DID AUSTRALIA not develop metal tools, writing, and politically complex societies? A major reason is that Aborigines remained hunter-gatherers, whereas, as we saw in Chapters 1214, those developments arose elsewhere only in populous and economically specialized societies of food producers. In addition, Australia's aridity, infertility, and climatic unpredictability limited its hunter-gatherer population to only a few hundred thousand people. Compared with the tens of millions of people in ancient China or Mesoamerica, that meant that Australia had far fewer potential inventors, and far fewer societies to experiment with adopting innovations. Nor were its several hundred thousand people organized into closely interacting societies. Aboriginal Australia instead consisted of a sea of very spa.r.s.ely populated desert separating several more productive ecological "islands," each of them holding only a fraction of the continent's population and with interactions attenuated by the intervening distance. Even within the relatively moist and productive eastern side of the continent, exchanges between societies were limited by the 1,900 miles from Queensland's tropical rain forests in the northeast to Victoria's temperate rain forests in the southeast, a geographic and ecological distance as great as that from Los Angeles to Alaska. not develop metal tools, writing, and politically complex societies? A major reason is that Aborigines remained hunter-gatherers, whereas, as we saw in Chapters 1214, those developments arose elsewhere only in populous and economically specialized societies of food producers. In addition, Australia's aridity, infertility, and climatic unpredictability limited its hunter-gatherer population to only a few hundred thousand people. Compared with the tens of millions of people in ancient China or Mesoamerica, that meant that Australia had far fewer potential inventors, and far fewer societies to experiment with adopting innovations. Nor were its several hundred thousand people organized into closely interacting societies. Aboriginal Australia instead consisted of a sea of very spa.r.s.ely populated desert separating several more productive ecological "islands," each of them holding only a fraction of the continent's population and with interactions attenuated by the intervening distance. Even within the relatively moist and productive eastern side of the continent, exchanges between societies were limited by the 1,900 miles from Queensland's tropical rain forests in the northeast to Victoria's temperate rain forests in the southeast, a geographic and ecological distance as great as that from Los Angeles to Alaska.

Some apparent regional or continentwide regressions of technology in Australia may stem from the isolation and relatively few inhabitants of its population centers. The boomerang, that quintessential Australian weapon, was abandoned in the Cape York Peninsula of northeastern Australia. When encountered by Europeans, the Aborigines of southwestern Australia did not eat sh.e.l.lfish. The function of the small stone points that appear in Australian archaeological sites around 5,000 years ago remains uncertain: while an easy explanation is that they may have been used as spearpoints and barbs, they are suspiciously similar to the stone points and barbs used on arrows elsewhere in the world. If they really were so used, the mystery of bows and arrows being present in modern New Guinea but absent in Australia might be compounded: perhaps bows and arrows actually were adopted for a while, then abandoned, across the Australian continent. All these examples remind us of the abandonment of guns in j.a.pan, of bows and arrows and pottery in most of Polynesia, and of other technologies in other isolated societies (Chapter 13).

The most extreme losses of technology in the Australian region took place on the island of Tasmania, 130 miles off the coast of southeastern Australia. At Pleistocene times of low sea level, the shallow Ba.s.s Strait now separating Tasmania from Australia was dry land, and the people occupying Tasmania were part of the human population distributed continuously over an expanded Australian continent. When the strait was at last flooded around 10,000 years ago, Tasmanians and mainland Australians became cut off from each other because neither group possessed watercraft capable of negotiating Ba.s.s Strait. Thereafter, Tasmania's population of 4,000 hunter-gatherers remained out of contact with all other humans on Earth, living in an isolation otherwise known only from science fiction novels.

When finally encountered by Europeans in A.D. A.D. 1642, the Tasmanians had the simplest material culture of any people in the modern world. Like mainland Aborigines, they were hunter-gatherers without metal tools. But they also lacked many technologies and artifacts widespread on the mainland, including barbed spears, bone tools of any type, boomerangs, ground or polished stone tools, hafted stone tools, hooks, nets, p.r.o.nged spears, traps, and the practices of catching and eating fish, sewing, and starting a fire. Some of these technologies may have arrived or been invented in mainland Australia only after Tasmania became isolated, in which case we can conclude that the tiny Tasmanian population did not independently invent these technologies for itself. Others of these technologies were brought to Tasmania when it was still part of the Australian mainland, and were subsequently lost in Tasmania's cultural isolation. For example, the Tasmanian archaeological record doc.u.ments the disappearance of fishing, and of awls, needles, and other bone tools, around 1500 1642, the Tasmanians had the simplest material culture of any people in the modern world. Like mainland Aborigines, they were hunter-gatherers without metal tools. But they also lacked many technologies and artifacts widespread on the mainland, including barbed spears, bone tools of any type, boomerangs, ground or polished stone tools, hafted stone tools, hooks, nets, p.r.o.nged spears, traps, and the practices of catching and eating fish, sewing, and starting a fire. Some of these technologies may have arrived or been invented in mainland Australia only after Tasmania became isolated, in which case we can conclude that the tiny Tasmanian population did not independently invent these technologies for itself. Others of these technologies were brought to Tasmania when it was still part of the Australian mainland, and were subsequently lost in Tasmania's cultural isolation. For example, the Tasmanian archaeological record doc.u.ments the disappearance of fishing, and of awls, needles, and other bone tools, around 1500 B.C. B.C. On at least three smaller islands (Flinders, Kangaroo, and King) that were isolated from Australia or Tasmania by rising sea levels around 10,000 years ago, human populations that would initially have numbered around 200 to 400 died out completely. On at least three smaller islands (Flinders, Kangaroo, and King) that were isolated from Australia or Tasmania by rising sea levels around 10,000 years ago, human populations that would initially have numbered around 200 to 400 died out completely.

Tasmania and those three smaller islands thus ill.u.s.trate in extreme form a conclusion of broad potential significance for world history. Human populations of only a few hundred people were unable to survive indefinitely in complete isolation. A population of 4,000 was able to survive for 10,000 years, but with significant cultural losses and significant failures to invent, leaving it with a uniquely simplified material culture. Mainland Australia's 300,000 hunter-gatherers were more numerous and less isolated than the Tasmanians but still const.i.tuted the smallest and most isolated human population of any of the continents. The doc.u.mented instances of technological regression on the Australian mainland, and the example of Tasmania, suggest that the limited repertoire of Native Australians compared with that of peoples of other continents may stem in part from the effects of isolation and population size on the development and maintenance of technology-like those effects on Tasmania, but less extreme. By implication, the same effects may have contributed to differences in technology between the largest continent (Eurasia) and the next smaller ones (Africa, North America, and South America).

WHY DIDN'T MORE-ADVANCED technology reach Australia from its neighbors, Indonesia and New Guinea? As regards Indonesia, it was separated from northwestern Australia by water and was very different from it ecologically. In addition, Indonesia itself was a cultural and technological backwater until a few thousand years ago. There is no evidence of any new technology or introduction reaching Australia from Indonesia, after Australia's initial colonization 40,000 years ago, until the dingo appeared around 1500 technology reach Australia from its neighbors, Indonesia and New Guinea? As regards Indonesia, it was separated from northwestern Australia by water and was very different from it ecologically. In addition, Indonesia itself was a cultural and technological backwater until a few thousand years ago. There is no evidence of any new technology or introduction reaching Australia from Indonesia, after Australia's initial colonization 40,000 years ago, until the dingo appeared around 1500 B.C. B.C.

The dingo reached Australia at the peak of the Austronesian expansion from South China through Indonesia. Austronesians succeeded in settling all the islands of Indonesia, including the two closest to Australia-Timor and Tanimbar (only 275 and 205 miles from modern Australia, respectively). Since Austronesians covered far greater sea distances in the course of their expansion across the Pacific, we would have to a.s.sume that they repeatedly reached Australia, even if we did not have the evidence of the dingo to prove it. In historical times northwestern Australia was visited each year by sailing canoes from the Maca.s.sar district on the Indonesian island of Sulawesi (Celebes), until the Australian government stopped the visits in 1907. Archaeological evidence traces the visits back until around A.D. A.D. 1000, and they may well have been going on earlier. The main purpose of the visits was to obtain sea cuc.u.mbers (also known as beche-demer or trepang), starfish relatives exported from Maca.s.sar to China as a reputed aphrodisiac and prized ingredient of soups. 1000, and they may well have been going on earlier. The main purpose of the visits was to obtain sea cuc.u.mbers (also known as beche-demer or trepang), starfish relatives exported from Maca.s.sar to China as a reputed aphrodisiac and prized ingredient of soups.

Naturally, the trade that developed during the Maca.s.sans' annual visits left many legacies in northwestern Australia. The Maca.s.sans planted tamarind trees at their coastal campsites and sired children by Aboriginal women. Cloth, metal tools, pottery, and gla.s.s were brought as trade goods, though Aborigines never learned to manufacture those items themselves. Aborigines did acquire from the Maca.s.sans some loan words, some ceremonies, and the practices of using dugout sailing canoes and smoking tobacco in pipes.

But none of these influences altered the basic character of Australian society. More important than what happened as a result of the Maca.s.san visits is what did not happen. The Maca.s.sans did not not settle in Australia-undoubtedly because the area of northwestern Australia facing Indonesia is much too dry for Maca.s.san agriculture. Had Indonesia faced the tropical rain forests and savannas of northeastern Australia, the Maca.s.sans could have settled, but there is no evidence that they ever traveled that far. Since the Maca.s.sans thus came only in small numbers and for temporary visits and never penetrated inland, just a few groups of Australians on a small stretch of coast were exposed to them. Even those few Australians got to see only a fraction of Maca.s.san culture and technology, rather than a full Maca.s.san society with rice fields, pigs, villages, and workshops. Because the Australians remained nomadic hunter-gatherers, they acquired only those few Maca.s.san products and practices compatible with their lifestyle. Dugout sailing canoes and pipes, yes; forges and pigs, no. settle in Australia-undoubtedly because the area of northwestern Australia facing Indonesia is much too dry for Maca.s.san agriculture. Had Indonesia faced the tropical rain forests and savannas of northeastern Australia, the Maca.s.sans could have settled, but there is no evidence that they ever traveled that far. Since the Maca.s.sans thus came only in small numbers and for temporary visits and never penetrated inland, just a few groups of Australians on a small stretch of coast were exposed to them. Even those few Australians got to see only a fraction of Maca.s.san culture and technology, rather than a full Maca.s.san society with rice fields, pigs, villages, and workshops. Because the Australians remained nomadic hunter-gatherers, they acquired only those few Maca.s.san products and practices compatible with their lifestyle. Dugout sailing canoes and pipes, yes; forges and pigs, no.

Apparently much more astonishing than Australians' resistance to Indonesian influence is their resistance to New Guinea influence. Across the narrow ribbon of water known as Torres Strait, New Guinea farmers who spoke New Guinea languages and had pigs, pottery, and bows and arrows faced Australian hunter-gatherers who spoke Australian languages and lacked pigs, pottery, and bows and arrows. Furthermore, the strait is not an open-water barrier but is dotted with a chain of islands, of which the largest (Muralug Island) lies only 10 miles from the Australian coast. There were regular trading visits between Australia and the islands, and between the islands and New Guinea. Many Aboriginal women came as wives to Muralug Island, where they saw gardens and bows and arrows. How was it that those New Guinea traits did not get transmitted to Australia?

This cultural barrier at Torres Strait is astonishing only because we may mislead ourselves into picturing a full-fledged New Guinea society with intensive agriculture and pigs 10 miles off the Australian coast. In reality, Cape York Aborigines never saw a mainland New Guinean. Instead, there was trade between New Guinea and the islands nearest New Guinea, then between those islands and Mabuiag Island halfway down the strait, then between Mabuiag Island and Badu Island farther down the strait, then between Badu Island and Muralug Island, and finally between Muralug and Cape York.

New Guinea society became attenuated along that island chain. Pigs were rare or absent on the islands. Lowland South New Guineans along Torres Strait practiced not the intensive agriculture of the New Guinea highlands but a slash-and-burn agriculture with heavy reliance on seafoods, hunting, and gathering. The importance of even those slash-and-burn practices decreased from southern New Guinea toward Australia along the island chain. Muralug Island itself, the island nearest Australia, was dry, marginal for agriculture, and supported only a small human population, which subsisted mainly on seafood, wild yams, and mangrove fruits.

The interface between New Guinea and Australia across Torres Strait was thus reminiscent of the children's game of telephone, in which children sit in a circle, one child whispers a word into the ear of the second child, who whispers what she thinks she has just heard to the third child, and the word finally whispered by the last child back to the first child bears no resemblance to the initial word. In the same way, trade along the Torres Strait islands was a telephone game that finally presented Cape York Aborigines with something very different from New Guinea society. In addition, we should not imagine that relations between Muralug Islanders and Cape York Aborigines were an uninterrupted love feast at which Aborigines eagerly sopped up culture from island teachers. Trade instead alternated with war for the purposes of head-hunting and capturing women to become wives.

Despite the dilution of New Guinea culture by distance and war, some New Guinea influence did manage to reach Australia. Intermarriage carried New Guinea physical features, such as coiled rather than straight hair, down the Cape York Peninsula. Four Cape York languages had phonemes unusual for Australia, possibly because of the influence of New Guinea languages. The most important transmissions were of New Guinea sh.e.l.l fishhooks, which spread far into Australia, and of New Guinea outrigger canoes, which spread down the Cape York Peninsula. New Guinea drums, ceremonial masks, funeral posts, and pipes were also adopted on Cape York. But Cape York Aborigines did not adopt agriculture, in part because what they saw of it on Muralug Island was so watered-down. They did not adopt pigs, of which there were few or none on the islands, and which they would in any case have been unable to feed without agriculture. Nor did they adopt bows and arrows, remaining instead with their spears and spear-throwers.

Australia is big, and so is New Guinea. But contact between those two big landma.s.ses was restricted to those few small groups of Torres Strait islanders with a highly attenuated New Guinea culture, interacting with those few small groups of Cape York Aborigines. The latter groups' decisions, for whatever reason, to use spears rather than bows and arrows, and not to adopt certain other features of the diluted New Guinea culture they saw, blocked transmission of those New Guinea cultural traits to all the rest of Australia. As a result, no New Guinea trait except sh.e.l.l fishhooks spread far into Australia. If the hundreds of thousands of farmers in the cool New Guinea highlands had been in close contact with the Aborigines in the cool highlands of southeastern Australia, a ma.s.sive transfer of intensive food production and New Guinea culture to Australia might have followed. But the New Guinea highlands are separated from the Australian highlands by 2,000 miles of ecologically very different landscape. The New Guinea highlands might as well have been the mountains of the moon, as far as Australians' chances of observing and adopting New Guinea highland practices were concerned.

In short, the persistence of Stone Age nomadic hunter-gatherers in Australia, trading with Stone Age New Guinea farmers and Iron Age Indonesian farmers, at first seems to suggest singular obstinacy on the part of Native Australians. On closer examination, it merely proves to reflect the ubiquitous role of geography in the transmission of human culture and technology.

IT REMAINS FOR us to consider the encounters of New Guinea's and Australia's Stone Age societies with Iron Age Europeans. A Portuguese navigator "discovered" New Guinea in 1526, Holland claimed the western half in 1828, and Britain and Germany divided the eastern half in 1884. The first Europeans settled on the coast, and it took them a long time to penetrate into the interior, but by 1960 European governments had established political control over most New Guineans. us to consider the encounters of New Guinea's and Australia's Stone Age societies with Iron Age Europeans. A Portuguese navigator "discovered" New Guinea in 1526, Holland claimed the western half in 1828, and Britain and Germany divided the eastern half in 1884. The first Europeans settled on the coast, and it took them a long time to penetrate into the interior, but by 1960 European governments had established political control over most New Guineans.

The reasons that Europeans colonized New Guinea, rather than vice versa, are obvious. Europeans were the ones who had the oceangoing ships and compa.s.ses to travel to New Guinea; the writing systems and printing presses to produce maps, descriptive accounts, and administrative paperwork useful in establishing control over New Guinea; the political inst.i.tutions to organize the ships, soldiers, and administration; and the guns to shoot New Guineans who resisted with bow and arrow and clubs. Yet the number of European settlers was always very small, and today New Guinea is still populated largely by New Guineans. That contrasts sharply with the situation in Australia, the Americas, and South Africa, where European settlement was numerous and lasting and replaced the original native population over large areas. Why was New Guinea different?

A major factor was the one that defeated all European attempts to settle the New Guinea lowlands until the 1880s: malaria and other tropical diseases, none of them an acute epidemic crowd infection as discussed in Chapter 11. The most ambitious of those failed lowland settlement plans, organized by the French marquis de Rays around 1880 on the nearby island of New Ireland, ended with 930 out of the 1,000 colonists dead within three years. Even with modern medical treatments available today, many of my American and European friends in New Guinea have been forced to leave because of malaria, hepat.i.tis, or other diseases, while my own health legacy of New G

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