Final answer:
The Roosevelt Corollary, declared by President Theodore Roosevelt in 1904, extended the Monroe Doctrine to allow the United States to intervene in Latin American affairs as a police power to ensure stability and prevent European interference.
Step-by-step explanation:
The Roosevelt Corollary
The Roosevelt Corollary was a significant extension of the Monroe Doctrine articulated by President Theodore Roosevelt in 1904. This foreign policy declared that the United States had the right to intervene in the affair of Latin American countries to maintain stability in the Western Hemisphere. It stated that the United States would act as an international police power to correct what it deemed as 'chronic wrongdoing' and prevent European nations from intervening in the region. Instead, European countries were expected to address their concerns in the Western Hemisphere through U.S. officials.
Over roughly two decades, the United States invoked the Roosevelt Corollary to justify military interventions in various Latin American countries, including the Dominican Republic, Nicaragua, and Haiti. Many in Latin America viewed this policy as a form of economic imperialism rather than the assistance it was portrayed as by U.S. officials. The Corollary facilitated U.S. actions such as managing the Dominican Republic's customs revenues and establishing U.S. protectorates, which often met with resistance and resentment from neighboring nations.
Despite the eventual softening of rhetoric and the adoption of the Good Neighbor Policy, subsequent administrations would still reference the Roosevelt Corollary to justify U.S. involvement in the region. This policy shaped the U.S.-Latin American relations during the early twentieth century and was reflective of the U.S. desire to exert influence and maintain control over the political and economic dynamics of its southern neighbors.