World War 1.
Many blacks left southern states during WW1 and moved to big northern cities to work in war industries.
More went to New York city than to any other,and after the war there a lot of blacks living in Harlem who were literate and artistic.
Answer:
4. judaism
Explanation:
Because it was dated back to BCE
I think that the answer would be A. economics was a big factor in those times
Leaving the safety of their trenches and attacking the enemy.
