The French kick the British out of the continent, though it results in an akward situation in which vital parts of the USA are angloprotestant even if the nation is oficially francocatholic
Now that would be interesting. France already was about 60% responsible for U.S. victory in the revolution. Them becoming a major cultural and religious contributor to the fledgling U.S. actually seems pretty possible and cool.
On a slightly different note, does anyone think that the Russians could have made the west coast states majority Orthodox in a similar timeframe?