What was the key issue addressed by the Monroe Doctrine?

The Monroe Doctrine primarily addressed the issue of European intervention in the Americas. Issued in 1823 by President James Monroe, this doctrine was a significant foreign policy statement that warned European nations against further colonization or interference in the political affairs of countries in the Western Hemisphere. At its core, the doctrine aimed to protect the newly independent nations in Latin America from European colonial powers that might seek to reclaim or expand their influence in the region. Thus, the Monroe Doctrine established the Americas as a sphere of influence for the United States and signaled a commitment to resisting European expansion, reinforcing the idea of U.S. sovereignty over the continent. This pivotal policy laid the groundwork for future American foreign relations and asserted a clear boundary between the Western Hemisphere and European nations.