The Mongol Empire declined at the end of the 14th century. Nevertheless,
the Mongol Empire remained in the form of confederation. It controlled
the territory stretching from the Khyangan Mountains in the east, up to
the Irtish and Enisei rivers, from Tengri Mountains in the north, the
Great Wall of China in the south. The last Emperor of the Mongol Dynasty
was Togugan Timor. In the early 15th century, Mongolia was divided into
two separate parts, which led to further break up of the Empire.
Dayan Khaan (1464-1543) ascended the throne in 1470. His efforts aimed at
reunification of all the Mongols had failed.