How is the Roosevelt Corollary different from the Monroe Doctrine?

The Monroe Doctrine had been sought to prevent European intervention in the Western Hemisphere, but now the Roosevelt Corollary justified American intervention throughout the Western Hemisphere. ... Roosevelt renounced interventionism and established his Good Neighbor policy within the Western Hemisphere.

The Monroe Doctrine had been sought to prevent European intervention in the Western Hemisphere, but now the Roosevelt Corollary justified American intervention throughout the Western Hemisphere.

Explanation:

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.