ocr: Settling Disputes. By1820 the United States hadsettled severalborder disputes.In the Convention of1818,the Jnited States and Great Britain hadsetthe 49th parallelas the United States border with Canada in the West. Then in the Adams-Onis Treaty,signedin 1819,the Jnited States - and Spain - more clearly defined the boundary ofthe Louisiana Purchase and Spain ceded Florida to the United States.
