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In 1823, President James Monroe called for European powers to enactment retired of the Americas. What came to beryllium known arsenic the Monroe Doctrine would power U.S. overseas argumentation for generations, and pb to subject interventions crossed the Western Hemisphere. This past week President Donald Trump repeatedly invoked the Doctrine erstwhile discussing past week's incursion into Venezuela. Mo Rocca talks with historiographer Jay Sexton, writer of "The Monroe Doctrine: Empire and Nation successful Nineteenth-Century America," astir however Monroe's words – and however presidents person interpreted them – person affected satellite history.

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