Which document is considered the supreme law of the united states increased separation of powers a) articles of confederation b) bill of rights c) declaration of independence d) us constitution

the answer is a articles of confederation

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.