Generally, there were two major factors that led to the decline of the Yuan Dynasty: one was the class conflict caused by the heavy taxation, the other one was the ethnic contradiction resulting from the 'Four Class System'. ... Also, power struggles within the ruling class became more and more serious.
The Revolution became more radical because the French were losing badly in their war with Austria and Prussia. The radicals believed that if they lost the war, they would be punished and the monarchy and Ancien Regime would be put back in place. ... He brought back stability and order to France for a while
