What was the main reason immigration to America decreased during the 1930s?
A.
There was no more room for people in the United States.
B.
People no longer cared about religious or political freedom.
C.
There were not as many difficulties in other parts of the world.
D.
The Great Depression reduced opportunities in America.
Because during the 1930s, immigration to America declined, because of harsh and restrictive laws set in by the Americans, because of factors like the Great Depression and the war looming in Europe.
