[dangus]

That map shows an empire a small fraction of the size of Genghis Khan, who conquered from Korea and China to Hungary, from the Indian Ocean to the Baltic Sea, including the entirety of China. Timurlane, in comparison, conquered only SW Asia.

[Cronos]

Most of Genghis Khan's Empire - with the exception of northern China (of course) and Khwarezim (pretty much the north of Timur's empire) was empty land.

The Mongols never held on to lands west of the Dnieper for very long