Map of the Yuan Dynasty

This is the Yuan Dynasty ( 1271-1368). The brown represents where the Yuan Dynasty was and the dotted line is where present day China is. The green line represents the Grand Canal. Notice that it was bigger then modern day China. This is because the Mongols not only conquered China, but also Tibet to Siberia. This means that the Mongols had to have an enormous army, as well as be under a skilled military leader.