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Created page with "== Origins and Formation == The American Federation of Labor (AFL) was a national federation of labor unions in the United States. It was founded in Columbus, Ohio, in December 1886 by an alliance of craft unions disaffected from the Knights of Labor, a national labor union. The AFL was the largest union grouping in the United States for the first half of the 20th century, even after the creation of the Congress of Industrial Organizations (CIO) by unions..."
