Answer:
The Knights of Labor was founded in 1869. They "organized unskilled and skilled workers, campaigned for an eight hour workday, and aspired to form a cooperative society in which laborers owned the industries in which they worked."
[...] In the late 1880s, skilled workers fled the beleaguered Knights of Labor and joined the newly-formed American Federation of Labor (AFL). The AFL was an umbrella organization that brought together craft unions—unions of skilled workers who organized together by individual trade, such as carpenters, stonemasons, and printers. Led by Samuel Gompers, head of the Cigar Makers Union, the AFL focused on higher wages, shorter hours, and better working conditions for its members.
Reference: Khan Academy. “The Knights of Labor.” Khan Academy, Khan Academy, 2019,
