The political machines took bribes, controlled contracts, and they embezzled money.
Their organization was very corrupt.
The Postwar Economy: 1945-1960. As the Cold Warunfolded in the decade and a half after World War II, the United States experienced phenomenal economic growth. The war brought the return of prosperity, and in the postwar period the United States consolidated its position as the world's richest country.
A. I hope this helped I am pretty sure this is the answer
