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!!)

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explanation:

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.