This PowerPoint presentation illuminates the growth of organized labor unions during the Gilded Age. It begins with a brief overview of how unions work and why they can be effective. It them examines the growth and goals of several specific unions including the National Labor Union, the Knights of Labor, the American Federation of Labor, and the Industrial Workers of the World. It also charts the response of management and business owners to union activity. It concludes with an examination of the highlights (lowlights?) of the struggle between labor and management by focusing on specific strikes. The Great Strike of 1877, the Haymarket Affair, the Homestead Steel Strike, and the Pullman Strike are all examined. This presentation is used in an AP United States history class and is based on the latter part of Chapter 24 of The American Pageant, 14th ed.