Which of the following most accurately explains the emergence of a large
American middle class after World War 11?
A. The U.S. economy shifted from wartime production to the
peacetime manufacture of consumer products,
B. The size of the average family fell rapidly, allowing individuals to
spend more money on themselves.
C. The expansion of the railroad industry and improved
communication capabilities created a national market for goods.
D. Women became an increasingly important part of the workforce,
greatly increasing their buying power.