The power of judicial review, which the supreme court claimed in the case of marbury v. madison, allows the court to

I'm not positive what you're exactly asking but this might be your answer... the supremacy clause implies the right of the Supreme Court to exercise judicial review.

c it says nothing about connecting those 2 seas.

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.