As the most powerful autocrat in history, Genghis Khan. Mongol Empire was established by Genghis Khan. He brought together the tribes of northeast Asia, creating his substantial kingdom. At that time, China's dominant Jin Dynasty was overthrown by Genghis Khan. 11% of the world's land was conquered by Genghis Khan. One of the famous quotes attributed to Genghis Khan is, "If you're afraid, don't do it; if you're doing it, don't be afraid!"