The Roosevelt Corollary extended the Monroe Doctrine, allowing U.S. intervention in Latin America as a police power to prevent European interference. This led to several U.S. military interventions in the region, which were viewed as acts of American imperialism.
The Roosevelt Corollary was an extension of the Monroe Doctrine, articulated by President Theodore Roosevelt in his 1904 address to Congress. It stated that the United States had the right and the duty to intervene as an international police power in the Western Hemisphere to correct any 'chronic wrongdoing' by Latin American nations. This policy resulted in numerous interventions by the U.S. in the Caribbean and Central America to prevent European powers from using debt collection or political instability as a pretext for encroaching upon American spheres of influence.
The Roosevelt Corollary was a significant shift from the original Monroe Doctrine's stance on non-interference, as it effectively proclaimed the U.S.'s right to intervene in Latin American affairs. This interventionist approach strained relations between the U.S. and Latin American countries and was seen as a form of American imperialism. Military force was used several times under this corollary to protect U.S. interests and to manage financial or political crises in countries such as the Dominican Republic, Nicaragua, and Haiti.