The Horse, the Wheel and Language by David W. Anthony, Princeton University Press, 2007.
This very rich and fascinating book details the development of our understanding of the history of the Indo European family of languages, from the latest common set of dialects spoken by people living in the steppes north of the Black and Caspian seas in southeastern Europe and southwestern Asia. David Anthony covers the time from the earliest diffusion of agriculture and domesticated animals out of Mesopotamia into southeastern Europe and the subsequent gradual spread out into the steppes. His key thesis is that the domestication of the wild horses of the steppes and their subsequent use as mounts, followed by the introduction of the wagon and the war chariot gave steppe tribes a mobility that enabled them to move long distances, eventually into central Europe and the Indian subcontinent, creating a bridge across cultural regions that by the late bronze age extended as far as China. Thus their language became the dominant family of languages over a vast geographic area.
To begin with, Anthony, an archaeologist, provides an account of the linguistic evidence for a common ancestral language. The history was derived from careful analysis of phonetic and morphological changes among closely and distantly related languages. This work has been going on since the 18th century, when Europeans first began to suspect that their languages and those of India were akin to one another. This process is very much like reconstructing a biological lineage from genetic and morphological data on living or fossil specimens. It is always only the best hypothesis to explain the data at hand, but lots of work gradually leads to trustworthy results. Interestingly, linguists and evolutionary biologists employ many of the same computer programs. Anthony argues that with the predictive capacity of these explanations and the help of inscriptions dating to some of the earliest writing, we can be reasonably certain that we know some 1500 root words of Proto Indo European as well as many more terms derived from them.
In a long series of chapters, he goes through the archaeological evidence to reconstruct the culture and characteristics of the speakers of Proto Indo European as well as how they came to be capable of leaving their steppe home and spreading out so far. Technological change is a key factor: the period covered extends from the late Neolithic to the Bronze Age. Tools, weapons, household goods and prestige items were all important. So was the domestication of the horse and the new kinds of both herding and livestock raiding that riding horses made possible. Climate change was another key factor: cold, dry periods favored herding over farming and led to wars that destroyed thriving agricultural settlements on the edges of the steppes. Cultural change was evident all along as settlement patterns, burial styles and material goods changed, indicating, according to Anthony, the rise of more male centered and hierarchical societies on the steppes – in other words the rise of the chieftain and possibly the priest, as had also happened in the city states of Mesopotamia. At some point the wheel spread into the steppe from the south.
In the steppe, horseback riding and the wagon facilitated an mobile style of herding that also could be accompanied by cattle raiding, looting and trading, which in turn led some to accumulate greater wealth in herds and goods, including copper and bronze weapons and ornaments. Harsher climates also contributed to this increase in social inequality. Anthony argues from linguistic evidence that the speakers of Proto Indo European developed two key social systems that enabled them to dominate the cultures that they encountered in their expansion out of the steppe: patron-client and guest-host. The former stabilized and solidified the pattern of social inequality; the latter made possible firm alliances among groups from both similar and different cultures on the basis of reciprocal obligation (the Indo European root for “guest” and “host” is the same). These, plus the ability of mobile herders to make long distance migrations and easily establish themselves wherever pasture could be found, profoundly shaped the future history of Eurasia. Sometimes raiding and warfare must have been involved in the spread of these peoples, but not the sorts of mobile armies (think of the Mongol hordes) seen in the iron ages and Medieval times; those were a much later development. The primary way the Indo European culture spread, according to Anthony, was incremental. A few powerful chiefs established themselves in new territory, either as patrons or as guest/hosts, and their superior wealth, culture and technology gradually won over the locals. Horseback riding and chariots (possibly invented in the steppe) were rapidly adopted in Europe, the Middle East and China, while the Indo European language evolved into multiple major branches, eventually extending from the British Isles to India.
Since the publication of this book, genetic studies of ancient Europeans have been published that are consistent with the overall picture given here. About the time suggested by Anthony for the initial spread of Indo European dialects into Eastern Europe, there was an significant spread of DNA, especially that of males, from the steppes north of the Black Sea into Europe. News reports from Science in 2015 and 2017 describes these studies as does a recent news article in. The evidence, however, raises many questions. For instance, there are also significant indications that European genes spread into the steppes. This could be explained if long distance trading or raiding, involving wives or children brought back by returning parties were significant, as well as children fathered by the migrants/visitors in Europe. It doesn’t rule out long distance migration and colonization by steppe peoples as well, but it suggests that the picture was complicated. Genes, culture and language spread together, with or without large-scale migration, in Anthony’s scenario.
What makes Anthony’s account particularly cogent, and better than any of the news stories, is his attention to detail, particularly in laying out the linguistic and archeological evidence. It’s a lot to take in, but we can be grateful for his scholarship and willingness to cross disciplinary boundaries.