'Tis called The American Revolution.
And, yes, the French did ally with America. Though they never really did anything... At all. France was never really directly interested in the conflict; it was pretty much just an opportunity to contest British power, by supporting the new British opponent. All they really did was sign a couple treaties, open some ports, and make it legal to sell gunpowder and ammo to Americans. See the France Section of the American Revolution. Their involvement really meant crap.
...And even then, that was in the 18th Century. I said 19+ plox.