Yuan Mongol Dynasty: 1279 - 1368 AD

Major Accomplishments: Mongol tribes led by Kublai Khan conquered the native Han Chinese Song Dynasty and treated China as a tribute state.  The Mongols also brutally crushed cities and regions that tried to rebel against the Mongols and killed tens of millions of Chinese people in the process.  

Yuan Video:

The Yuan Mongol Dynasty was overthrown by rebellions throughout the country and a powerful Ming army.