The Rise and Fall of the Third Chimpanzee

by Jared Diamond

That conclusion presents us with a double puzzle. Firstly, by 3500 BC farming had become the dominant way of life in almost all of Europe and much of Asia. That severely narrows down the possible choices for the PIE homeland; it must have been an unusual area where farming was not so dominant. Secondly, it begs the question why PIE speakers were able to expand. A major cause of the Bantu and Austronesian expansions was that the first speakers of those language families were farmers, spreading into areas occupied by hunter-gatherers whom they could outnumber or dominate. For PIE speakers to have been rudimentary farmers invading a farming Europe turns historical experience on its head. Thus, we cannot solve the ‘where’ of Indo-European origins until we have come to grips with the hardest question: why?

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  In Europe just before the age of writing, there were not one but two economic revolutions so far-reaching in impact that they could have caused a linguistic steamroller. The first was the arrival of farming and herding, which originated in the Near East around 8000 BC, leapt from Turkey to Greece around 6500 BC, and then spread north and west to reach Britain and Scandinavia. Farming and herding permitted a large increase in human population numbers over those previously sustainable by hunting and gathering alone (Chapter Ten). Colin Renfrew, Professor of Archaeology at the University of Cambridge in England, recently published a thought-provoking book arguing that those farmers from Turkey were the PIE speakers who brought Indo-European languages to Europe.

  My first reaction to reading Renfrew’s book was, ‘Of course, he must be right!’ Farming had to produce a linguistic upheaval in Europe, just as it did in Africa and Southeast Asia. This is especially likely since, as geneticists have shown, those first farmers made the biggest contribution to the genes of modern Europeans.

  But – Renfrew’s theory ignores or dismisses all the linguistic evidence. Farmers reached Europe thousands of years before the estimated arrival of PIE. The first farmers lacked, and PIE speakers possessed, innovations like ploughs, wheels, and domesticated horses. PIE is strikingly deficient in words for the crops that defined the first farmers. Hittite, the oldest known Indo-European language of Turkey, is not the Indo-European language closest to pure PIE, as one might expect from Renfrew’s Turkey-based theory, but is instead the most deviant language and the one least Indo-European in its vocabulary. Renfrew’s theory rests on nothing more than a syllogism: farming probably caused a steamroller, the PIE steamroller requires a cause, so farming is assumed to have been that cause. Everything else suggests that farming instead brought to Europe the older languages that PIE overran, like Etruscan and Basque.

  Yet around 5000–3000 BC – at the right time for PIE origins – there was a second economic revolution in Eurasia. This later revolution coincided with the beginnings of metallurgy and involved a greatly expanded use of domestic animals – not just for meat and hides, as humans had been using wild animals for a million years, but for new purposes that included milk, wool, pulling ploughs, pulling wheeled vehicles, and riding. The revolution is richly reflected in the PIE vocabulary, through words for ‘yoke’ and ‘plough’, ‘milk’ and ‘butter’, ‘wool’ and ‘weave’, and a host of words associated with wheeled vehicles (‘wheel’, ‘axle’, ‘shaft’, ‘harness’, ‘hub’, and ‘lynch-pin’).

  The economic significance of this revolution was to increase human population and power far beyond the levels made possible by farming and herding alone. For instance, through milk and its products one cow gradually yielded many more calories than did its meat alone. Ploughing allowed a farmer to plant much more acreage than he could with a hoe or digging stick. Animal-drawn vehicles allowed people to exploit far more land and still bring its produce to their village for processing.

  For some of these advances it is hard to say where they arose, because they spread so quickly. For example, wheeled vehicles are unknown before 3300 BC, but within a few centuries of that date they are widely recorded throughout Europe and the Middle East. But there is one crucial advance whose origin can be identified: the domestication of horses. Just before their domestication, wild horses were absent from the Mideast and southern Europe, rare in northern Europe, and abundant only in the steppes of Russia eastwards. The first evidence of horse domestication is for the Sredny Stog culture around 4000 BC, in the steppes just north of the Black Sea, where archaeologist David Anthony has identified wear-marks on horses’ teeth that indicate use of a bit for riding.

  Throughout the world, wherever and whenever domestic horses have been introduced, they have yielded enormous benefits for human societies (Chapter Fourteen). For the first time in human evolution, people could travel overland faster than their own legs could propel them. Speed helped hunters run down their prey and helped herders manage their sheep and cattle over large areas. Most importantly, speed helped warriors to launch quick surprise raids on distant enemies and to withdraw again before the enemies had time to organize a counterattack. Throughout the world the horse revolutionized warfare and enabled horse-owning peoples to terrorize their neighbours. The stereotype that Americans hold of Great Plains Indians as fearsome mounted warriors was actually created only recently, within a few generations from 1660 to 1770. Since European horses reached the US West in advance of Europeans themselves and other European goods, we can be sure that the horse alone was what transformed Plains Indian society.

  Archaeological evidence makes clear that domestic horses had similarly transformed human society on the Russian steppe much earlier, around 4000 BC. The steppe habitat of open grassland was hard for people to exploit until they could use horses to solve the problems of distance and transport. Human occupation of the Russian steppe accelerated with horse domestication and then exploded with the invention of ox-drawn wheeled vehicles around 3300 BC. The steppe economy came to be based on the combination of sheep and cattle for meat, milk, and wool, plus horses and wheeled vehicles for transport, and supplemented by a little farming.

  HOW INDO-EUROPEAN LANGUAGES MIGHT HAVE SPREAD

  The inferred homeland where proto-Indo-European (PIE), the mother tongue, was spoken lay in the Russian steppes north of the Black Sea and east of the Dnieper River.

  There is no evidence for intensive agriculture and food storage at those early steppe sites, in marked contrast to the abundant evidence at other European and Mideast sites around the same time. Steppe people lacked large permanent settlements and were evidently highly mobile – again in contrast to the villages with rows of hundreds of two-storey houses in southeast Europe at the time. What the horsemen lacked in architecture, they made up for in military zeal, as attested by their lavish tombs (for men only!), filled with enormous numbers of daggers and other weapons, and sometimes even with wagons and horse skeletons.

  Thus, Russia’s Dnieper River (see map on page 243) marked an abrupt cultural boundary:, to the east, the well-armed horsemen, to the west, the rich farming villages with their granaries. That proximity of wolves and sheep spelt T–R–O–U–B–L–E. Once the invention of the wheel completed the horsemens’ economic package, their artifacts indicate a very rapid spread for thousands of miles eastwards through the steppes of central Asia (see map). From that movement, the ancestors of the Tocharians may have arisen. The steppe peoples’ spread westwards is marked by the concentration of European farming villages nearest the steppes into huge defensive settlements, then the collapse of those societies, and the appearance of characteristic steppe graves in Europe as far west as Hungary.

  Of the innovations that drove the steppe peoples’ steamroller, the sole one for which they clearly get full credit is the domestication of the horse. They might also have developed wheeled vehicles, milking, and wool technology independently of the Mideast’s civilizations, but they borrowed sheep, cattle, metallurgy, and probably the plough from the Mideast or Europe. Thus, there was no single ‘secret weapon’ that alone explains the steppe expansion. Instead, with horse domestication the steppe peoples became the first to put together the economic and military package t
hat came to dominate the world for the next 5,000 years – especially after they added intensive agriculture upon invading southeastern-Europe. Hence their success, like that of the second-stage European expansion that began in 1492, was an accident of biogeography. They happened to be the peoples whose homeland combined abundant wild horses and open steppe with proximity to Mideastern and European centres of civilization.

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  As archaeologist Marija Gimbutas, from the University of California, Los Angeles, has argued, the Russian steppe peoples who lived west of the Ural Mountains in the fourth millenium BC fit quite well into our postulated picture of proto-Indo-Europeans. They lived at the right time. Their culture included the important economic elements reconstructed for PIE (like wheels and horses), and lacked the elements lacking from PIE (like battle chariots and many crop terms). They lived in the right place for PIE: the temperate zone, south of Finno-Ugric peoples, near the later homeland of Lithuanians and other Balts.

  If the fit is so good, why does the steppe theory of Indo-European origins remain so controversial? There would have been no controversy if archaeologists had been able to demonstrate a rapid expansion of steppe culture from southern Russia all the way to Ireland around 3000 BC. But that did not happen; direct evidence of the steppe invaders themselves extends no further west than Hungary. Instead, around and after 3000 BC, one finds a bewildering array of other cultures developing in Europe and named for their artifacts (for instance, the ‘Corded Ware and Battleaxe Culture’). Those emerging Western European cultures combine steppe elements like horses and militarism with old Western European elements, especially settled agriculture. Such facts cause many archaeologists to discount the steppe hypothesis altogether, and to see the emerging Western European cultures as local developments.

  However, there is an obvious reason why the steppe culture could not spread intact to Ireland. The steppe itself reaches its western limit in the plains of Hungary. That is where all subsequent steppe invaders of Europe, such as the Mongols, stopped. To spread further, steppe society had to adapt to the forested landscape of Western Europe – by adopting intensive agriculture, or by taking over existing European societies and hybridizing with their peoples. Most of the genes of the resulting hybrid societies may have been the genes of Old Europe.

  If steppe people imposed PIE, their mother tongue, on southeastern Europe as far as Hungary, then it was the resulting daughter Indo-European culture, not the original steppe culture itself, that spread to derived granddaughter cultures elsewhere in Europe. Archaeological evidence of major cultural change suggests that such granddaughter cultures may have arisen throughout Europe and east to India between 3000 and 1500 BC. Many non-Indo-European languages held out long enough to be preserved in writing (like Etruscan), and Basque still survives today. Thus, the Indo-European steamroller was not a single wave, but a long chain of events that has taken 5,000 years to unfold.

  As an analogy, consider how Indo-European languages came to dominate North and South America today. We have abundant written records to prove that they stem from invasions of Indo-European speakers from Europe. Those European immigrants did not overrun the Americas in one step, and archaeologists do not find remains of unmodified European culture throughout the sixteenth-century New World. That culture was useless on the US frontier. Instead, the colonists’ culture was a highly modified or hybrid one that combined Indo-European languages and much of European technology (such as guns and iron) with American Indian crops and (especially in Central and South America) Indian genes. Some areas of the New World have taken many centuries for Indo-European language and economy to master. The takeover did not reach the Arctic until this century. It is reaching much of the Amazon only now, and the Andes of Peru and Bolivia promise to remain Indian for a long time yet.

  Suppose that some future archaeologist should dig in Brazil, after written records have been destroyed and Indo-European languages have disappeared from Europe. The archaeologist will find European artifacts suddenly appearing on the coast of Brazil around 1530, but penetrating the Amazon only very slowly thereafter. The people whom the archaeologist finds living in the Brazilian Amazon will be a genetic mishmash of American Indians, blacks, Europeans, and Japanese, speaking Portuguese. The archaeologist will be unlikely to realize that Portuguese was an intrusive language, contributed by invaders, to a hybrid local society.

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  Even after the PIE expansion of the fourth millenium BC, new interactions of horses, steppe peoples, and Indo-European languages continued to shape Eurasian history. PIE horse technology was primitive and probably involved little more than a rope-bit and bareback rider. For thousands of years thereafter, the military value of horses continued to improve with inventions ranging from metal bits and horse-drawn battle chariots around 2000 BC to the horseshoes, stirrups, and saddle of later cavalry. While most of these advances did not originate in the steppes, steppe peoples were still the ones who profited the most, because they always had more pasture and therefore more horses.

  As horse technology evolved, Europe was invaded by many more steppe peoples, among whom the Huns, Turks, and Mongols are best known. These peoples carved out a succession of huge, short-lived empires, stretching from the steppes to Eastern Europe. But never again were steppe peoples able to impose their language on Western Europe. They enjoyed their biggest advantage at the outset, when PIE bareback riders invaded a Europe entirely without domestic horses.

  There was another difference between these later recorded invasions and the earlier unrecorded PIE invasion. The later invaders were no longer Indo-European speakers from the western steppes, but speakers of Turkic and Mongol languages from the eastern steppes. Ironically, horses were what enabled Turkish tribes from central Asia in the Eleventh Century AD to invade the land of the first written Indo-European language, Hittite. The most important innovation of the first Indo-Europeans was thus turned against their descendants. Turks are largely European in their genes, but non-Indo-European (Turkish) in their language. Similarly, an invasion from the east in 896 AD left modern Hungary largely European in its genes but Finno-Ugric in its language. By illustrating how a small invading force of steppe horsemen could impose their language on a European society, Turkey and Hungary provide models of how the rest of Europe came to speak Indo-European.

  Eventually, steppe peoples in general, regardless of their language, ceased to win in the face of Western Europe’s advancing technology. When the end came, it was swift. In 1241 AD the Mongols achieved the largest steppe empire that ever existed, stretching from Hungary to China. But after about 1500 AD the Indo-European-speaking Russians began to encroach on the steppes from the west. It took only a few more centuries of tsarist imperialism to conquer the steppe horsemen who had terrorized Europe and China for over 5,000 years. Today the steppes are divided between Russia and China, and only Mongolia remains as a vestige of steppe independence.

  Much racist nonsense has been written about the supposed superiority of Indo-European peoples themselves. Nazi propaganda invoked a pure Aryan race. In fact, Indo-Europeans have never been unified since the PIE expansion of 5,000 years ago, and even PIE speakers themselves may have been divided among related cultures. Some of the most bitter fighting and vilest deeds of recorded history pitted one Indo-European group against another. The Jews, Gypsies, and Slavs whom the Nazis sought to exterminate conversed in languages as Indo-European as that of their persecutors. Speakers of proto-Indo-European merely happened to be in the right place at the right time to put together a useful package of technology. Through that stroke of luck, theirs was the mother tongue whose daughter languages came to be spoken by half the world today.

  Appendix

  A PROTO-INDO-EUROPEAN FABLE

  Owis Ekwoosque

  Gwrreei owis, quesyo wlhnaa ne eest, ekwoons espeket, oinom ghe gwrrum woghom weghontm, oinomque megam bhorom, oinomque ghmmenm ooku bherontm.

  Owis nu ekwomos ewewquet: ‘Keer aghnutoi moi ekwoons agontm nerm
widntei.’

  Ekwoos tu ewewquont: ‘Kludhi, owei, keer ghe aghnutoi nsmei widntmos: neer, potis, owioom r wlhnaam sebhi gwhermom westrom qurnneuti. Neghi owioom wlhnaa esti.’

  Tod kekluwoos owis agrom ebhuget.

  [The] Sheep and [the] Horses

  On [a] hill, [a] sheep that had no wool saw horses, one [of them] pulling [a] heavy wagon, one carrying [a] big load, and one carrying [a] man quickly.

  [The] sheep said to [the] horses: ‘My heart pains me, seeing [a] man driving horses.’

  [The] horses said: ‘Listen, sheep, our hearts pain us when we see [this]: [a] man, the master, makes [the] wool of [the] sheep into [a] warm garment for himself. And [the] sheep has no wool.’

  Having heard this, [the] sheep fled into [the] plain.

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  In order to provide some sense of how proto-Indo-European (PIE) might have sounded, I have included the fable above, in reconstructed PIE, together with an English translation. The fable was invented over a century ago by the linguist August Schleicher. The revised version given here is based on one published by W.P. Lehmann and L. Zgusta in 1979, which takes account of the deeper understanding of PIE gained since Schleicher’s time. This version has been slightly altered from that of Lehmann and Zgusta to make it more ‘user-friendly’ for non-linguists, with the advice of Jaan Puhvel.

  While PIE initially looks strange, many words will prove familiar on scrutiny because of similar English or Latin roots derived from PIE. For instance, owis means ‘sheep’ (cf. ‘ewe’, ‘ovine’); wlhnaa means ‘wool’; ekwoos means ‘horses’ (cƒ. ‘equestrian’, Latin equus); ghmmenm means ‘man’ (cƒ. ‘human’, Latin hominem); que means ‘and’, as in Latin; mega means ‘big’ (cƒ. ‘megabucks’); keer means ‘heart’ (cƒ. ‘core’, ‘cardiology’); moi means ‘to me’; and widntei and widntmos’ mean ‘see’ (cƒ. ‘video’). The PIE text lacks definite and indefinite articles (‘the’ and ‘a’) and places the verb at the end of the clause or sentence.