Pan-Americanism is a movement that seeks to create, encourage, and organize relationships, an association, and cooperation among the states of the Americas, through diplomatic, political, economic, and social means.

The Monroe Doctrine is a United States foreign policy position that opposes European colonialism in the Western Hemisphere. It holds that any intervention in the political affairs of the Americas by foreign powers is a potentially hostile act against the United States. The doctrine was central to American grand strategy in the 20th century.