What were the 3 major unions that developed during the late 1800 and their goals?

The three major unions that developed during the late 1800s were the Knights of Labor, the American Federation of Labor (AFL), and the Industrial Workers of the World (IWW). The Knights of Labor aimed for broad social reforms, including an eight-hour workday and the end of child labor. The AFL focused on skilled workers, advocating for better wages, hours, and working conditions through collective bargaining. The IWW sought to unite all workers, regardless of skill level, to overthrow capitalism and promote workers' rights through direct action and strikes.