After Napoleon captured Louverture, he attempted to reinstitute slavery on the island—but was beaten by the army Louverture left behind. Though he was already dead, Louverture defeated his third European superpower. Napoleon suffered more losses in Saint-Domingue than he would at Waterloo, and these reverses forced him to sell Louisiana and parts of fourteen additional states to the United States for $15 million. The French emperor later confessed that he should have ruled the island through Louverture.