How difficult was it for people to move from one social group to another in Nigeria?

The sheer size of the income gap between the rich and poor, which makes it harder to climb the proverbial income ladder because the rungs are far apart. Poverty, since those with low income have significantly lower rates of mobility than middle and higher income individuals.

Explanation:

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.