One of the biggest long term consequences that came out of the american revolution was the end of mercantilism which created new trade for all of the colonists. Mercantilism was used by the British too prevent the colonists from making any sizable amount of money, but made the British alot of money. Mercantilism made sure that the colonists could only buy from the British and the colonists could only sell to the British.
Another large consequence was the first nations people sided with the British because they wanted to keep they're land but the Americans won, and rapidly expanded almost wiping them out.
The American revolution gained independance for the American colonists.