MongolMember of any of the various Mongol (or Mongolian) ethnic groups of central Asia. Mongols live in Mongolia, Russia, Inner Mongolia (China), Tibet, and Nepal. In the early 13th century, united under Genghis Khan, the Mongols from 1206 to 1226 conquered central Asia, attacked Eastern Europe and established the Mongolian Empire, a rather loosely constructed federation of tribal groups.