Genghis Khan ruled the vast Mongol Empire from 1206-1227, expanding its territory across much of Asia and eastern Europe. After his death, the empire fractured under his sons' rule. Kublai Khan later reconquered much of China and established his capital in modern-day Beijing, making him the first non-Chinese ruler of China. European explorer Marco Polo traveled to the Mongol Empire in the late 1200s and brought back knowledge of Asia that was previously unknown in Europe.