What changes did the us make to the monroe doctrine?

The United States modified the Monroe Doctrine primarily through the Roosevelt Corollary, articulated by President Theodore Roosevelt in 1904. This addition asserted that the U.S. had the right to intervene in Latin American countries to maintain stability and order, thereby expanding the doctrine's original intent of opposing European colonialism. Over time, the doctrine evolved to justify U.S. intervention in the region, reflecting changing foreign policy priorities. Additionally, the Truman Doctrine and the policy of containment during the Cold War further shifted the U.S. approach to hemispheric and global relations.