What role did Allies play in the winning of the American Revolution?

These are two main alliances that played a part in the winning of the American Revolutionary War:

France; The American's lacked in allies, and so they turned toward France. France wasn't really interested in becoming one of their allies, but just took it upon as an opportunity to contest British power by supporting a new British opponent.
Secretly, France's foreign minister was given authorization to sell gunpowder and ammunition to the Americans. The French gave close to 1,000,000 pounds under a Portuguese company.

Spain; Spain consistently supported the colonists throughout the war. The first thing that they did was join with a trading company that provided military supplies. The Spain aid was supplied to the colonies through four main routes: from the French ports with the military supplies, to the port of New Orleans and  went up the Mississippi River, from the warehouses in Havana, and from Bilbao, through the Gardoqui family trading company.