Henry Ford showed that enormous revenues could come from small unit profit on a large volume of sales. Frederick W. Taylor's
management methods emphasized the enforcement of work standards and cooperation. NAACP led the fight for equal rights and
education. Between 1900 and 1920, women increasingly found professional careers closed to them. In the first decade of the
twentieth century, the American Federation of Labor remained devoted to the interests of skilled workers. In terms of worker
relations, Henry Ford tried many innovations. The greatest leisure time available to workers resulted from a decreased in
the length of the work week. A popular form of entertainment that drew from the immigrant experience was vaudeville.