For example, reasonably solid lexical reconstructions indicate that Proto-Indo-European contained words for otter, beaver, wolf, lynx, elk, red deer, horse, mouse, hare, and hedgehog, among wild animals; goose, crane, duck, and eagle, among birds; bee and honey; and cattle (also cow, ox, and steer), sheep (also wool and weaving), pig (also boar,

The Mitanni were famous as charioteers, and, in the oldest surviving horse-training manual in the world, a Mitanni horse trainer named Kikkuli (a Hurrian name) used many Old Indic terms for technical details, including horse colors and numbers of laps.

The isolated prehistoric societies of China and Europe became dimly aware of the possibility of one another’s existence only after the horse was domesticated and the covered wagon invented. Together, these two innovations in transportation made life predictable and productive for the people of the Eurasian steppes. The opening of the steppe—its

Most historians think of war when they begin to list the changes caused by horseback riding and the earliest wheeled vehicles. But horses were first domesticated by people who thought of them as food. They were a cheap source of winter meat; they could feed themselves through the steppe winter, when cattle and sheep needed to be supplied with water