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Family sells its farm and moves to a large city is the answer
We refer to World War one as Total War, because this term describes a war in which countries or nations mobilize and force to the limit all their available resources, be they human, military, industrial, agricultural, natural, technological , scientists, or of any other kind, to totally destroy the ability of another country or nation to engage in a war, and this was what happened in the First World War.
American factories were to produce goods to support the war effort and almost overnight the unemployment rate dropped to around 10%.