title: First French Empire
context: Following his retreat from Russia, Napoleon continued to retreat, this time from Germany. After the loss of Spain, reconquered by an allied army led by Wellington, the rising in the Netherlands preliminary to the invasion and the manifesto of Frankfort (1 December 1813)[14] which proclaimed it, he had to fall back upon the frontiers of 1795; and then later was driven yet farther back upon those of 1792—despite the brilliant campaign of 1814 against the invaders. Paris capitulated on 30 March 1814, and the Delenda Carthago, pronounced against Britain, was spoken of Napoleon. The Empire briefly fell with Napoleon's abdication at Fontainebleau on 11 April 1814.
question: Why did Napoleon empire fall?
answers: 11 April 1814