From Fred Barnes at The Weekly Standard:
Before the United States had a president or a constitution, it had the Treaty of Marrakech with Morocco. That diplomatic pact has the distinction of being the longest standing treaty between America and another country. Tomorrow, July 18, marks the 225th anniversary of its ratification.
By including America in a maritime treaty, Morocco is considered the first country to recognize the newly independent country. The follow-up treaty of “friendship and amity” was urged in 1783 by American commissioners in Paris – Benjamin Franklin, John Adams, and John Jay – signed in Morocco in 1786, and ratified by the new Congress a year later.