World War II was responsible for changing nearly every facet of American life, particularly for women. With their men away and many not returning, women needed to support their families. With the men away, factories needed women to work. As women entered the workforce, they gained an independence which would only grow from that point onward. They became an integral part of society rather than just playing a supporting role to the men.
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African-Americans - Still segregated in US and military, fought for a country that denied them equal status, worked in larger numbers in factories.
Native Americans - Served in the military in numbers greater than their percentage of the population, but unlike other minorities, were integrated into white units. Reservation life was largely unchanged.
Women - Made a major contribution on the Home Front in industrial production, taking over jobs vacated by men, and in hospitals and nursing positions. Served in various capacities but not in the military yet. Raised families alone, almost every family had at least one member in the military.
Mexican-Americans - Also served in the military in integrated units with whites. Bracero program introduced to import guest agricultural workers from Mexico.