Monroe Doctrine

1823 - Four basic points that opposed European colonization in the western hemisphere. The U.S. had no way of upholding them. 1) Non U.S. Involvement with internal affairs of European Powers 2) No U.S. Interference in Western Colonies 3) Western hemisphere closed to further colonization 4) Any attempt to oppress or control any nation in the Western hemisphere would be a hostile act against the U.S.