Mary Harris Jones, commonly known as Mother Jones, is the historic figure celebrated for founding the first women's trade union in the U.S. Through her activism, Jones advocated for the rights of workers, particularly women and children, during the late 19th and early 20th centuries. She played a significant role in labor movements, organizing strikes and raising awareness about exploitation in industries. Her dedication to social justice earned her a prominent place in labor history. Jones' efforts contributed to the establishment of unions that focused on improving working conditions and fair wages, thus leaving a lasting legacy for future generations of labor leaders.