What does AFL stand for?

AFL stands for the American Federation of Labor, which is one of the largest and oldest federations of unions in the United States. Founded in 1886, the AFL played a significant role in advocating for workers' rights, including better wages, hours, and working conditions. It sought to organize skilled laborers and was influential in the labor movement, promoting collective bargaining and union activities. The other options refer to organizations or groups that do not exist or are not associated with the AFL, which solidifies the accuracy of selecting American Federation of Labor as the correct answer in the context of labor history and union organization.