World War I produced important changes in American life--some trivial, others profound. One striking change involved fashion. To conserve wool and cotton, dresses became shorter and vests and cuffs disappeared, as did double-breasted suits, pleats, and ruffles. Even more significant was the tremendous increase in mobility. The war set families in motion, pulling them off of farms and out of small towns and packing them into large urban areas. Urbanization had virtually stopped during the Depression, but the war saw the number of city dwellers leap from 46 to 53 percent. War industries sparked the urban growth. Detroit's population exploded as the automotive industry switched from manufacturing cars to war vehicles. Washington, D.C. became another boomtown, as tens of thousands of new workers staffed the swelling ranks of the bureaucracy. The most dramatic growth occurred in California. Of the 15 million civilians who moved across state lines during the war, over 2 million went to California to work in defense industries. Women The war had a dramatic impact on women. The sudden appearance of large numbers of women in uniform was easily the most visible change. The military organized women into auxiliary units with special uniforms, their own officers, and, amazingly, equal pay. By 1945, more than 250,000 women had joined the Women's Army Corps (WAC), the Army Nurses Corps, Women Accepted for Voluntary Emergency Service (WAVES), the Navy Nurses Corps, the Marines, and the Coast Guard. Most women who joined the armed services either filled traditional women's roles, such as nursing, or replaced men in non-combat jobs. During the first world war, the first demonstations were held to give women the right to vote. Women also substituted for men on the home front. For the first time in history, married working women outnumbered single working women as 6.3 million women entered the work force during the war. The war challenged the conventional image of female behavior, as "Rosie the Riveter" became the popular symbol of women who abandoned traditional female occupations to work in defense industries. Social critics had a field day attacking women. Social workers blamed working mothers for the rise in juvenile delinquency during the war. African Americans In 1941, the overwhelming majority of the nation's African American population--10 of 13 million--still lived in the South, primarily in rural areas. During the war, more than one million blacks migrated to the North--twice the number during World War I--and more than two million found work in defense industries. Black leaders fought discrimination vigorously. In the spring of 1941 (months before America entered the war), the president of the Brotherhood of Sleeping Car Porters, A. Philip Randolph, with strong backing from the National Association for the Advancement of Colored People (NAACP), called for 150,000 blacks to march on Washington to protest discrimination in defense industries. Embarrassed and concerned, Roosevelt issued an executive order prohibiting discrimination in defense industries and creating the Fair Employment Practices Commission (FEPC). During the war, the Marines excluded blacks, the Navy used them as servants, and the Army created separate black regiments commanded mostly by white officers. The Red Cross even segregated blood plasma. As urban areas swelled with defense workers, housing and transportation shortages exacerbated racial tensions. In 1943, a riot broke out in Detroit in a federally-sponsored housing project when whites wanted blacks barred from the new
