Trade Unions: Trade unions are organizations formed by workers who come together to negotiate with employers for better wages, working conditions, and other employment-related issues.
Knights of Labor: The Knights of Labor was a prominent labor union during the Gilded Age that advocated for worker solidarity and sought economic reform through political means.
American Federation of Labor (AFL): The American Federation of Labor was a national federation of trade unions that focused on organizing skilled workers and negotiating with employers for better wages and working conditions.