The correct response is: The Louisiana Territory was no longer useful to him after the Haitian Revolution.
After the Haitian Revolution, which saw the successful slave rebellion and the establishment of Haiti as a free nation, Napoleon realized that maintaining control over the vast Louisiana Territory, which was seen as a source of resources for supporting French interests in the Americas, was increasingly difficult. The loss of Haiti meant he could no longer rely on it as a base for operations in North America, leading him to sell the territory to the United States in 1803.