When did america win the american revolution

The united states won the war when it defeated the British in the Siege of Yorktown on October 19th, 1781 which was the last major battle of the war, but Britain finally accepted it lost in the Treaty of Paris on September 3rd, 1783

after defeating german forces in north africa allied leaders turned their attention to "italy," since this was the location that made the most geographic sense before invading northern europe via france.