Who was the main author of the Monroe Doctrine?

The Monroe Doctrine, articulated in 1823, was primarily crafted by John Quincy Adams, who served as Secretary of State under President James Monroe. The doctrine was a significant statement of American foreign policy that warned European powers against further colonization and intervention in the Americas. Adams believed it was vital to assert U.S. interests in the Western Hemisphere and prevent European influences from destabilizing fledgling nations in South America. His diplomatic skill and insight into international relations were crucial in shaping the doctrine, which became a cornerstone of American foreign policy in the years to come.

In contrast to the other figures, this doctrine was not the result of collaborative efforts, and the others were not as directly involved in foreign policy at that time. James Madison and Martin Van Buren focused more on domestic issues during their presidencies, while Andrew Jackson's era came after the Monroe Doctrine was established, thus not associating him with its authorship.