Question

What "Super Union" had taken on railroad companies and factories to improve the conditions for workers?

( 1 )
Knights of Labor

( 2 )
International Workers of the World (IWW)

( 3 )
American Federation of Labor (AFL)

( 4 )
American Railway Union (ARU)

Answer 1

Step-by-step explanation:

4th one is the answer

American Railway Union (ARU)