Question 1
The correct answer is: "sweatshops".
The term sweatshop is used in a pejorative manner to describe a working place with socially unacceptable, and even risky working conditions. These can involve danger, underpayment, etc. Even child labor can be found there.
Question 2
The correct answer is: "African Americans who fled the South after the end of Reconstruction"
The terms exodusters is used to refer to African Americans who migrated in 1879, after the Civil War, from the Southern states located along the Mississippi River until Kansas.