U.S. History End-of-Course Practice Exam Notes

Roosevelt's Corollary to the Monroe Doctrine was intended to justify U.S. intervention in the affairs of Latin American countries, asserting the United States' right to act as a 'policeman' in the region if countries in the Americas engaged in conduct that threatened the rights or property of U.S. citizens or companies.

• It essentially expanded the Monroe Doctrine (1823), which had warned European powers against further colonization or intervention in the Western Hemisphere.

• The Roosevelt Corollary was articulated by President Theodore Roosevelt in his State of the Union address in 1904.

• It became a significant basis for U.S. foreign policy in Latin America in the early 20th century.