The nickname for U.S. soldiers in WW1 was known as "doughboys". There are many explanations for the nickname for the soldiers but the most common was that their uniforms would be coated with dust, so that they looked like they were made out of dough, or perhaps of adobe.
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The war. This is because During the war, more than 12 million Americans were sent into the military, and a similar number toiled in defense-related jobs. Those war jobs seemingly took care of the 17 million unemployed in 1939. Most historians have therefore cited the massive spending during wartime as the event that ended the Great Depression. Hope this helps! Please mark brainlist.