A trade union protests their employers for better or improved working conditions, sometimes through strikes, picketing, etc.
The lack of unity, the opposition of corporations, and blacklisting of leaders were problems faced
Answer:
A
Explanation:
Since the population of the cities increased with more factories being built, A seems to be the best choice: More people moved to the city in order to work in the factories.
Both employees and applicants pay fees to private employment agencies
