Britain was charging the colonies with taxes.
Answer:
Agricultural Transition
I think that's the suitable answer
There are actually two reasons why Napoleon did so. One was because he knew that if he had held on to it, the United States would start a conflict, and he didn't want that to happen. Also, this is the most important reason, by him helping the United States, and him helping the French treasury at the same time, Napoleon was able to create a world with so much power, that he was able to challenge Britain.
