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America's policy changed from isolationist to more active involvement in the world. Select an I for those items that evidence isolationism, a W for those for world activism, and an H for those that indicate activism only in the Western Hemisphere. The Panama Canal Early part of World War I The Platt Amendment Before the Spanish-American War The Monroe Doctrine War on the Central Powers The Open Door Policy



Answer :

The main way in which America's policy changed from isolationist to more active involvement in the world was though the Spanish American War and the Open Door Policy. 

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