一公元前二千年与一千年的交替时期,欧亚大陆草原地带出现了第一批游牧民。到公元前一千年中叶,游牧业逐渐完全取代了放牧业.从此以后在几乎三千年中,欧亚大陆草原地带和一部分森林草原地带就成了游牧业的摇篮。游牧业是指主要生产经济乃是全年放牧畜群且大部分或绝大部分居民跟畜群一起游动的 Between the two millennia BC and the millennium, the first nomads emerged in the grasslands of Eurasia. By mid-1000 BC, nomadic farming gradually replaced herding, and for almost three thousand years the Eurasian steppe and part of the forest steppe became the cradle of nomadic herds. Nomadic means that the main productive economy is that the herds are herded throughout the year and that most or most of the residents are swimming with herds