Who were the first large numbers of undocumented immigrants that used the border between the U. S and Mexico to enter the U. S? A. Cubans
B. Chinese
C. Japanese
D. Mexicans
WILL MARK BRAINLIEST

I think it was those african Migger's fuciking pick cotton

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.