Why was there so much growth in labor unions towards the end of the 19th century? the powerful leadership of the newly arriving immigrants. workers banding together against big business to demand better pay and working conditions (low wages, long workdays, no vacations, and unsafe the passage of the sherman anti-trust act. the formation of the interstate commerce commission.

workers  banding  together  against  big  business  to  demand  better  pay  and  working  condition(low  wages,long  workdays,no  vacation,and  unsafe  work  place)  (ANSWER  B )this was  the  the  reason  why  labor  union grew up  in order  to  protect  the  workers  interest. There  was  a  wide  gap  between employers and  skilled workers  which  needed  to  be filled  therefore  workers  developed  union and  collective  bargain  with  their  employers .

The mercantilism option