The policy or movement is the Monroe Doctrine
What was the Monroe Doctrine
The Monroe Doctrine was a U.S. foreign policy principle articulated by President James Monroe in 1823. It aimed to prevent European powers from further colonizing or interfering in the Americas. The key points of the Monroe Doctrine included:
Non-Colonization: It stated that further colonization attempts by European powers in the Americas would be considered an act of aggression against the United States.
Non-Intervention: The doctrine also warned European nations against interfering in the political affairs of independent countries in the Americas.
Reciprocity: It assured that the United States would refrain from interfering in European internal affairs.