Ligdan Khan
After the breakdown of Mongol Empire and the fall of the Yuan dynasty in the mid-14th century, the Mongols turned into a political turmoil. Dayan Khan (1464–1517/1543) once revived Emperor's authority and recovered its reputation in Mongolia, but with the distribution of his empire among his sons and relatives as fiefs it again caused decentralized rule. The last Khagan of the Chahars, Ligdan Khan, died in 1634 while fighting the Qing dynasty founded by the Manchu people. In contemporary Mongolian language the words "Khaan" and "Khan" have different meanings, while English language usually does not differentiate between them. The title is also used as a generic term for a king or emperor (as эзэн хаан, "ezen khaan"), as in "Испанийн хаан Хуан Карлос" ("Ispaniin khaan Khuan Karlos", "king/khaan of Spain Juan Carlos").