One of the greatest changes in the United States was the most of the women had served in the workplace in one way or another during the war, when the men were off fighting. Many did not return to be housekeepers after the war, and some were competing with men returning home. Another change also had to do with the structure of the economy. Almost everyone was involved in the war effort in some way, and we had grown quite efficient. That efficiency was put into mass production of consumer goods on a scale not seen before the war.