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What was the major cause for the entry of the U.S. into World War 1?

User Velazcod
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President Woodrow Wilson appeared before a joint session of Congress on April 2, 1917, to propose a declaration of war against Germany. Wilson's decision to lead the United States into World War I was primarily motivated by Germany's resumption of submarine attacks on passenger and commerce ships in 1917.

User Ccxvii
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