Question

1. what was the first formally organized labor union in the united states? american federation of labor national labor union knights of labor

Explanation:

To determine the first formally organized labor union in the US, we analyze each option:

• The American Federation of Labor (AFL) was founded later (1886) and focused on skilled workers.
• The National Labor Union (NLU) was the first national labor union in the US, organized in 1866, aiming to advocate for labor rights.
• The Knights of Labor was founded in 1869, later than the NLU.

So the National Labor Union was the first formally organized labor union in the US.

Answer:

B. National Labor Union