Question 15 of 16 Why did workers form trade unions in the early 1800s?
A. Workers wanted to demand better pay.
B. Factory owners only hired workers that were union members.
C. New laws forced workers to organize.
D. Workers needed to receive training from unions to operate
machines.

Which effect did the united states supreme court's decision in plessy v. ferguson have? 1. ending segregation in all public schools in america 2. protecting voting rights for african americans by eliminating literacy tests 3. upholding the rights of all citizens to be treated equally by the government 4. authorizing the system that kept black and white people separated