OONE EXPERIENCE ROME, PERSIA, INDIA, AND CHINA ALL SHARED was conflict with nomads who came from the very broad region referred to as Central Asia. This region was dominated by the steppe, arid grasslands that stretched from modern Hungary to Mongolia and parts of present northeast China. Initially small in number, the nomadic peoples of this region used their military superiority to conquer first other nomads, then the nearby settled societies. In the process they created settled empires of their own that drew on the cultures they absorbed.