How did the Monroe doctrine affected American?

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Madison wanted to let Europe know that the United States would not allow the European monarchies to regain power in the Americas. The Monroe Doctrine had a long lasting impact on the foreign policy of the United States. ... It was the beginning of the U.S. acting as an international police force in the Americas.

(please give brainliest!!)

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.