 He sold the Louisiana Territory to the United States, and he attempted to restore slavery to the French Caribbean colonies.However, while he was successful in restoring slavery in the eastern Caribbean, Napoleon failed in his attempts to subdue Saint-Domingue, and the colony that France once proudly boasted of as the "Pearl of the Antilles" became independent as Haiti in 1804.Napoleon's ambition and public approval inspired him to go further, and he became the first Emperor of the French in 1804.