Were it not for the French blockade and defeat of the British Fleet, Washington would not have cornered and then defeated Cornwallis at Yorktown.
Washington’s success over Cornwallis was the direct and strong result of “a foreign entanglement”
You have to wonder whether the Colonials would have prevailed at all without the French alliance. At the very least it would have been a longer, bloodier affair.
And in large part we have George Washington himself to thank for that alliance, because his screw-up while serving as a Colonial officer to the British Army in the Ohio Valley in 1754 was the spark that began the French & Indian War, in the aftermath of which the French had reason to want to see the secession of the Colonial Americans succeed.