The
World war 1was fought in Europe and lasted from July 28, 1914 to November 1918.
It was cause by the assassination of Austrian nationals, Archduke Franz
Ferdinand and his wife by a young Serbian revolutionary. Although the United States was actively
involved in the war for only 19 months, the mobilization of the economy was
extraordinary. Over 4million Americans served in the armed forces and the U.S
economy turned out a vast supply of raw materials and ammunition's both for
itself and its allies.

