Which of the following is not associated with mechanical weathering?

1.C.2.D.3.A. THEY ARE ALL CORRECT *dab*

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.

not sure might be he acquired the entire oregon territory from great britain