The main purpose of the first labor unions were getting better conditions and better pay for workers. The correct option among all the options that are given in the question is the second option or option "B". The labors needed the union to get rid of deprivation that the business owners were doing. I hope the answer helps you.
Cherokee, Cheyenne, Choctaw, Comanche, Iroquois, and Muscogee are the Native American tribes that assimilated the most.
I think it is B, but don’t know so please check
Most Europeans believed the war would end quickly, but it bogged down to trench warfare.