3 сент 1783 г. - American Revolution Ends — Treaty of Paris 

Описание:

Signed in Paris by the King George III of Great Britain and representatives of the USA, the Treaty of Paris ended the American Revolution. The treaty set boundaries of land and sea for the British and the USA, which largely benefitted the USA.

This Treaty recognizes America as the USA, as stated in Article1, which also means that USA is now globally recognized as a independent country.