Timeline of United States diplomatic relations
The following is a timeline of major dates in U.S. diplomatic history, specifically the establishment or severance of official diplomatic relations, the diplomatic recognition of sovereign countries, and the opening or closure of diplomatic posts. == 18th century == February 6, 1778 – France recognizes the United States as an independent state with the signing of the Treaty of Amity and Commerce.
Source: Wikipedia — Timeline of United States diplomatic relations (CC BY-SA 4.0)