The document discusses the history and development of labor unions in the United States from the 1700s through modern times. Early unions organized skilled workers but faced public opposition. The labor movement gained momentum in the late 1800s and unions negotiated for better pay and working conditions. Major labor laws in the 1930s-1950s protected collective bargaining rights and established minimum standards. While unions were strong after World War II, their membership and influence have declined in recent decades.