The History of the Mongol Conquests - J. J. Saunders - Google Books

https://books.google.de/books?id=nFx3OlrBMpQC

The Mongol conquests, culminating with the invasion of Europe in the middle of the thirteenth century, were of a scope and range never equaled. These nomadic peoples from central Asia briefly held sway over an empire that stretched across Asia to the…