Answer:
It was a national federation of labor unions in the United States founded in Columbus, Ohio, in December 1886 by an alliance of craft unions disaffected from the Knights of Labor, a national labor union. Its member groups comprised national trade or craft unions that organized local unions and negotiated wages, hours, and working conditions.
Ancient Mayans: Temples for Everyone! The Pyramid of Kukulkan, a temple built to honor the feathered serpent god, still stands in Chichen Itza. It was long thought that the ancient stone pyramid temples of the Maya were built by their royalty.
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I believe the answer is B.krishna
Fighting in Vietnam started in 1954 when technically France tried to reassert its colonial claims to Indochina, although Japan had claims as well. It was primarily a colonial beginning.