The Mongol Government Genghis Khan Founder of the Mongol Empire. Began rule in 1206. Was the ruler when the Mongols gained much of their land and powere. Died at 65 in a battle. Kublai Khan Ruled as an emperor and general c. 1215 - c. 1294. Grandson of Gengis Khan. Fifth great Khan of the Mongul Empire. Founded the Y uan Dynasty in China.