Who advised President James Monroe about issuing a statement related to the new nations in Latin America

President James Monroe was primarily advised by his Secretary of State, John Quincy Adams, regarding the issuance of the statement related to the new nations in Latin America, which later became known as the Monroe Doctrine. Adams played a crucial role in shaping U.S. foreign policy at the time, advocating for a strong stance against European intervention in the Western Hemisphere. The Monroe Doctrine, declared in 1823, asserted that any European attempt to colonize land or interfere with states in North America or South America would be viewed as acts of aggression, prompting U.S. intervention. This doctrine was significant in establishing the United States' role in the geopolitical landscape of the Americas.