What was the Roosevelt Corollary and what power did it give the US?

The Roosevelt Corollary, introduced by President Theodore Roosevelt in 1904, was an extension of the Monroe Doctrine, asserting the right of the United States to intervene in Latin American countries to maintain stability and order. It effectively positioned the U.S. as the "policeman" of the Western Hemisphere, allowing it to justify intervention in the affairs of neighboring nations, particularly to prevent European powers from exerting influence in the region. This policy led to increased U.S. involvement in Latin America, shaping foreign relations for decades.