Final answer:
Theodore Roosevelt aimed to protect Latin American nations from European military intervention through the Roosevelt Corollary to the Monroe Doctrine, which allowed the U.S. to act as an international police power in the region.
Step-by-step explanation:
Theodore Roosevelt pledged to protect Latin American nations from European military action. This commitment was formalized through the Roosevelt Corollary to the Monroe Doctrine, where Roosevelt asserted the right of the United States to act as an international police power in the Western Hemisphere.
His approach was to collect debts on behalf of Europeans to prevent them from having to intervene directly, which could have violated the Monroe Doctrine's principle of European non-interference. The Corollary expanded on the original doctrine by allowing the United States to get involved in the affairs of Latin American nations to maintain order and stability. Roosevelt's policy had both critics and supporters, and it was seen as a form of American imperialism by many, especially within the affected Latin American countries.