The Adams-Onis Treaty and the Monroe Doctrine demonstrated the influence of which of the following? A. Manifest Destiny B. Gadsden Purchase C. Missouri Compromise D. Kansas Nebraska Act

The answer is A. The Adams-Onis Treaty gave the United States ownership of Florida from Spain.

The Monroe Doctrine maintained that European powers should stay out of the Western Hemisphere.

The idea of manifest destiny suggested that Americans had a right to inhabit their continent.

The Adams-Onis Treaty enforced the Monroe Doctrine by removing land from the Spanish empire and adding it as a state, thus demonstrating the idea of manifest destiny.