What was significant about the mongol rulers?

The Mongols always favored trade. Their nomadic way of life caused them to recognize the importance of trade from the very earliest times and, unlike the Chinese, they had a positive attitude toward merchants and commerce.The Mongols were a nomadic people from the steppes of Central Asia. Known as fierce horsemen and warriors, the Mongol clans were united in 1206 by the powerful chief Temujin, later known as Gengis Khan. They shared the mountainous areas between China and Siberia with many other s
suck tribes, many of them Turkic. When Ghengis Khan united them as a powerful nation with a mighty army of mounted archers they were irresistible for all but might walled cities.

Race, for example, the chinese exclusion act