What was the importance of the jewish diaspora in the sixth century b. c.e.?

the Jews were scattered to live among non-Jewish citizens for the first time.

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.

c or d both can be the answer