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In 1917, after 3 years of neutrality, United States declared war on Imperial Germany and thereby entered World War I for several reasons. One, unrestricted submarine warfare destroyed American ships. Two, the Zimmerman telegram outraged the United States and gave reason to believe that Germany was planning to wage war directly on the continental US. Three, Russian withdrawal from war with the Bolshevik overthrow of its government dramatically increased the chances of German victory in Europe. First, since the very beginning of the war in 1914, United States was a major supplier of food and military supplies to both, the Allied and Central powers. However, due to British navy’s successful blockade of German outlets to the ocean, American ships were no longer able to