Born in 1162. Genghis Khan was the founder and Great Khan (emperor) of the Mongol Empire. Genghis Khan united many nomadic tribes of Northeast Asia. One of the countries that the Mongolian had eliminated was the Jin dynasty (collapsed in 1234), and it became the cornerstone of the foundation of Southern Song dynasty. Genghis Khan organized his people, army, and his state to first prepare for wars. During Khan’s years of lead （1206-1227), he created one of the most largest contiguous empire throughout the history. His conquest can far to Europe and the Mongol invasions covered most of Eurasia. Although people admired Genghis Khan’s military power, Genghis Khan did something that was beyond his military accomplishment— Increasing trades and communication
