American Civics HOLT Chapter 24 Section 1: Development of a Foreign Policy The United States entered World Wars II: u World War II—United States became the “arsenal of democracy” u December 7, 1941—Japanese bombed Pearl Harbor and shattered U. S. neutrality; U. S. declared war on Japan u Germany and Italy declared war on the United States 7 HOLT, RINEHART AND WINSTON
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