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"The Thirteenth Amendment to the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime. In Congress."
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"The National Labor Union was the first national labor federation in the United States paved the way for other organizations, such as the Knights of Labor and the AFL."
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"The Knights pressed for the eight-hour work day for laborers, and embraced a vision of a society in which workers, not capitalists, would own the industries in which they labored. The Knights also sought to end child labor and convict labor".
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"Samuel Gompers was a Jewish immigrant labor union leader and a key figure in American labor history. Gompers founded the American Federation of Labor, and served as the organization's president."
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"The Haymarket Affair was the aftermath of a bombing that took place at a labor demonstration at Haymarket Square in Chicago. It began as a peaceful rally in support of workers striking for an eight-hour work day, the day after police killed one and injured several workers."
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"American federation of Labor was a national federation of labor unions in the United States founded in Columbus, Ohio by an alliance of craft unions disaffected from the Knights of Labor, a national labor union".
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Pullman Strike in U.S. history was a widespread railroad strike and boycott that severely disrupted rail traffic in the Midwest of the United States.
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"The Triangle Shirtwaist Factory fire in the Greenwich Village neighborhood of Manhattan, New York City was the deadliest industrial disaster in the history of the city, and one of the deadliest in U.S. history."
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The wagner Act was instrumental in preventing employers from interfering with workers' unions and protests in the private sector.
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The Taft–Hartley Act is a United States federal law that restricts the activities and power of labor unions.