Japan–United States relations
International relations between Japan and the United States began in the late 18th and early 19th century with the 1852–1855 diplomatic but force-backed missions of U.S. ship captains James Glynn and Matthew C. Perry to the Tokugawa shogunate. Following the Meiji Restoration, the countries maintained relatively cordial relations.
Source: Wikipedia — Japan–United States relations (CC BY-SA 4.0)