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.
Christopher Columbus accidentally discovered The Americas after taking 4 trips across the Atlantic Ocean. He tried to find a route from Europe to Asia.
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Because all southern states were considered conquered territories <span />