Question

how was the noble order of knights of labor different from the national labor union?
the noble order of knights of labor did not use the tactic of going on strike in their approach, but the national labor union used this tactic to achieve their goals.
the national labor union did not allow african americans to join, but the nobel order of knights of labor did allow african americans to join.
the national labor union forced all workers, skilled and unskilled, to join their group; yet, the noble order of knights of labor was strictly voluntary.
the national labor unions members were all female, but the nobel order of knights of labor only had male members.

Explanation:

The National Labor Union (NLU) was a short - lived labor organization in the United States. It did not allow African Americans to join. On the other hand, the Noble Order of Knights of Labor was more inclusive. It allowed African Americans to be part of the union. This was a significant difference between the two labor organizations.

Answer:

The National Labor Union did not allow African Americans to join, but the Nobel Order of Knights of Labor did allow African Americans to join.