Answer: he divided it into provinces and assigned satraps to govern them
he created an alliance with the city-states of Greece
he used military technology Persia learned from the Hyksos
he destroyed temples and made the religions of conquered people illegal
Explanation: He had to mainatin control over his empire by doing such actions
Mongol leader Genghis Khan (1162-1227) rose from humble beginnings to establish the largest land empire in history. After uniting the nomadic tribes of the Mongolian plateau, he conquered huge chunks of central Asia and China. His descendants expanded the empire even further, advancing to such far-off places as Poland, Vietnam, Syria and Korea. At their peak, the Mongols controlled between 11 and 12 million contiguous square miles, an area about the size of Africa.
