Mongolia & Taiwan By kelliesasso Sep 2, 1227 Genghis Khan dies. May 3, 1261 Khubilai becomes great Khan. May 3, 1388 Chinese troops destroy Karakorum. May 3, 1391 Timur defeats Golden Horde. Period: May 3, 1400 to May 3, 1454 Civil war ends Mongol unity. May 3, 1466 Dayan Khan reunites most of Mongolia. May 3, 1571 Mongols end 300-year war with China. May 3, 1586 Buddhism becomes state religion. May 3, 1672 Mongols raid Siberia and Russia. May 3, 1683 The Manchu Dynasty conquered Taiwan. May 3, 1911 Mongols pushed China out and achieved their independence.