Labor history of the United States

 
Labor history of the United States
"...Labor history of the United States describes the history of organized labor, as well as the more general history of working people in the United States of America. Pressures dictating the nature and power of organized labor have included the evolution and power of the corporation, efforts by employers and private agencies to limit or control unions, and U.S. labor law. As a response, organized unions and labor federations have competed, evolved, merged, and split against a backdrop of changing social philosophies and periodic federal intervention...."
Reference: wikipedia.org