Ancient Chinese Warfare, Ralph D. Sawyer, Basic Books, 2011, ISBN 978-0-465-02145-1, ... According to one well-argued view, the horse that eventually evolved from among several “horselike” animals primarily emerged in the Pontic-Caspian steppe between the Caucasus and Ural mountains by about 4800 BCE ...
Next Word, Better Word: The Craft of Writing Poetry, Stephen Dobyns, Macmillan, 2011, ISBN 978-0-230-62180-0, ... Pontic-Caspian Steppe in the Ukraine and southern Russia between 4500 and 2500 BCE, whose expansion began when they domesticated the horse. The Proto-Indo-European root dem∂, meaning “to force,” referred to breaking horses ...
