<P> By the end of 1941 , before American entry into the war , defense spending and military mobilization had started one of the greatest booms in American history thus ending the last traces of unemployment . </P>
<P> By the end of 1941 , before American entry into the war , defense spending and military mobilization had started one of the greatest booms in American history thus ending the last traces of unemployment . </P>
when did the usa emerge ( come out of ) the economic depression
when did the usa emerge ( come out of ) the economic depression
By the end of 1941
By the end of 1941