I missed this yesterday, but September 3 is a significant date in U.S. history. On that date in 1783 the Treaty of Paris was signed, ending the American War of Independence and extending international recognition to "the said United States."
His Brittanic Majesty acknowledges the said United States, viz., New Hampshire, Massachusetts Bay, Rhode Island and Providence Plantations, Connecticut, New York, New Jersey, Pennsylvania, Maryland, Virginia, North Carolina, South Carolina and Georgia, to be free sovereign and independent states, that he treats with them as such, and for himself, his heirs, and successors, relinquishes all claims to the government, propriety, and territorial rights of the same and every part thereof.
Read the text here, and see document here.
The Continental Congress sent its A Team to negotiate that treaty - John Adams, Benjamin Franklin, and John Jay. They got everything they wanted. Have we ever done that well since?