Mongol Empire By Reid_Wenisch Jan 1, 1162 Genghis Khan is born Jan 1, 1206 Genghis Khan becomes ruler of Mongol Empire Jan 1, 1226 Genghis Khan led conquests from China to Caspian Sea Jan 1, 1227 Genghis Khan dies Jan 1, 1227 Genghis' son, Og'dei becomes new Khan Jan 1, 1235 Og'Dei leads more Mongol conquests Jan 1, 1240 Batu conquered Russia and establihsed the Golden Horde Jan 1, 1260 Kublai Khan becomes new leader Jan 1, 1279 Mongols complete conquest, establish Yuan Dynasty Jan 1, 1294 Kublai Khan dies Jan 1, 1368 Kublai's sons were bad leaders, fall of Mongol empire