Question

What was the Roosevelt Corollary to the Monroe Doctrine?

It gave U.S. land to Latin American nations as a sign of goodwill.
It ended all trade between the U.S. and Latin American countries.
It asserted U.S. power to intervene in Latin American affairs.
It invited European nations to establish colonies in the Americas.

Answer 1

It asserted U.S. power to intervene in Latin American affairs.

Briefly: Added by President Theodore Roosevelt (1904), the Corollary said the U.S. could use military force to stabilize Latin American countries to prevent European intervention under the Monroe Doctrine.