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Laws banning arms sales and loans to other nations to keep the US out of conflicts, reinforcing isolationist ideas.
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Investigated whether arms manufacturers had caused US to go into WWI for profit, reinforcing isolationist ideas.
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An act that allowed the US to give supplies to the Allies without payment, ending isolationist ideas.
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Germany's invasion of Poland started the second world war, US beginning as isolationalists
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An Agreement between FDR and Churchill, signaling interventionism even though the country was neutral.
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An attack on the Pearl Harbor military base by Japan, who suddenly surprised them and sunk many ships, ending isolationism.
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The US's trade of destroyers for military bases in Britain, moving towards interventionism.
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The US's declaration of a defense zone in the Atlantic, moving further from isolationism to interventionism