Genghis Khan, AttilaXanaduThe people of the first nomadic empire left no written records, but from 200 bc they dominated the heart of Asia for four centuries, and changed the world in the process. The Mongols, todays descendants of Genghis Khan, see these people as ancestors. Their rise cemented Chinese identity and inspired the first Great Wall. Their descendants helped destroy the Roman Empire under the leadership of Attila the Hun.XiongnuHunnuEmpire of Horses |