Roosevelt Corollary to Monroe Doctrine
The Monroe Doctrine, put forth in 1823 by President James Monroe, called for an end to European intervention in the American continents (both north and south). This applied only to independent governments in the Americas however, not to areas that were colonies at that time. In what came to be known as theRoosevelt Corollary to the Monroe Doctrine, Roosevelt asserted that European nations should not intervene in countries to the south of the US, however under certain conditions, United States intervention might be justified.
•Not only would US act if European powers intervened in the Americas (Monroe Doctrine), but the US could intervene first in order to prevent that possibility.