Liberty Bonds were created and sold by the U.S. government during World War I to help fund the American war effort. The bonds were a way for Americans to support the war, especially if they were unable to take part in combat. The bonds were issued five times between 1917 and 1919.
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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.
