Toledo War (1835, Michigan Territory-Ohio) Aroostook War (1838–39, U.S.-Britain) Honey War (1839, Iowa Territory-Missouri) Oregon boundary dispute (1844–1846, U.S.-Britain) Pig War (1859, U.S.-Britain) Chamizal dispute (1895–1963, U.S.-Mexico) Alaska boundary dispute (1907, U.S.-Canada) Red River Bridge War (1932, Oklahoma-Texas)