The Northern Yuan was a dynastic state ruled by the Mongol Borjigin clan based in the Mongolian Plateau. It existed as a rump state after the collapse of the Yuan dynasty in 1368 and lasted until its conquest by the Jurchen-led Later Jin dynasty in 1635. The Northern Yuan dynasty began with the retreat of the Yuan imperial court led by Toghon Temür (Emperor Huizong of Yuan) to the Mongolian steppe. This period featured factional struggles and the often only nominal role of the Great Khan.
Dayan Khan and Mandukhai Khatun reunited most Mongol tribes in the late 15th century. However, the former's distribution of his empire among his sons and relatives as fiefs caused the decentralization of the imperial rule. Despite this decentralization, a remarkable concord continued within the Dayan Khanid aristocracy, and intra-Chinggisid civil war remained unknown until the reign of Ligdan Khan (1604–1634), who saw much of his power weakened in his quarrels with the Mongol tribes and was defeated by the Later Jin dynasty. The last sixty years of this period featured the intensive penetration of Tibetan Buddhism into Mongol society.
