The main reason why having a written constitution was so important to Americans was because they were afraid of tyrannical governments forming without one.
It promised Mexico back land that they had lost from United States.
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.