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When did the US join World War Two?

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Although the war began with Nazi Germany's attack on Poland in September 1939, the United States did not enter the war until after the Japanese bombed the American fleet in Pearl Harbor, Hawaii, on December 7, 1941. read more

During the first two years of World War II, the United States had maintained formal neutrality as made officially in the Quarantine Speech delivered by U.S. President Franklin D. Roosevelt in 1937, while supplying Britain, the Soviet Union, and China with war material through the Lend-Lease Act which was signed into law on 11 March 1941, as well as deploying the U.S. military to replace the British invasion forces in Iceland. read more

The roots of World War II, which eventually pitted Germany, Japan, and Italy (the Axis) against the United States, Great Britain and the Soviet Union (the Allies), lay in the militaristic ideologies and expansionist policies of Nazi Germany, Italy, and Japan. read more

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