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 225^th anniversary of its ratification.

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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.