What were two important labor unions in the late 1800s?

Two important labor unions in the late 1800s were the Knights of Labor and the American Federation of Labor (AFL). The Knights of Labor, founded in 1869, aimed to unite all workers across various trades and advocated for broad social reforms, including the eight-hour workday. In contrast, the AFL, established in 1886, focused on skilled workers and prioritized concrete economic gains, such as better wages and working conditions, through collective bargaining. Both unions played significant roles in the labor movement and highlighted the growing demands for workers' rights during that era.