I think the answer is :
C. Workingmen's party; Chinese exclusion Act
Back then, many immigrants from the mainland of China entered united states and took the majority of middle-lower wages job, leaving little opportunity for the local citizen
hope this helps
I think they might have improved the land for crops and made buildings
B, i believe, it wouldn’t be D or A because both of those are on the positive side of an government.
Answer:
They may have hoped to prevent the concentration of power
Explanation: