What was the name of the spy ring that helped the United States win the Revolutionary War?

The story behind the answer

Culper Ring is correct because it was the code-named spy network organized by Major Benjamin Tallmadge for George Washington during the Revolutionary War. Operating mainly in British-occupied New York City and Long Island, members like Abraham Woodhull (“Samuel Culper Sr.”) and Robert Townsend (“Samuel Culper Jr.”) used number codes and invisible “sympathetic ink” to report British troop movements and plans—intelligence that helped thwart operations, including a planned British strike against newly arrived French allies in Rhode Island.

“Washington’s Spies” is a popular nickname (and book/TV title), but the network’s actual code name was the Culper Ring. Memory tip: Culper = “covert helpers,” the secret circle that helped Washington outsmart the British.