Answer:
A. A religion was first practiced
Answer:
B. Europe
Explanation:
On the graph, you can see that after 1870-1919, Europe's immigration basically goes downhill. In that case, Europe received a very major decline in immigration, making it the right answer. Apologies if I'm wrong.
Internment Camps.
https://en.wikipedia.org/wiki/Internment_of_Japanese_Americans
Because this caused ex slaves to go into debt, once they were freed they had no access to jobs which lead to sharecropping. this resulted into them working for free to repay their debts