Answer: The National Labor Union was the first labor organization that began in 1866.
Explanation: The National Labor Union was the first national labor federation that existed in the United States. It began in 1866 and its leaders were William H. Sylvis and Andrew Cameron. Moreover, although it was dissolved seven years after it was founded, it encouraged the birth of other labor organizations. Some of the organizations that were inspired by the NLU were Knights of Labor, which was founded in 1869, and the American Federation of Labor, born in 1886.
