Which African American was the first black person to get a doctorate from Harvard university

Du Bois

Explanation:

After receiving a bachelor's degree from Fisk University in 1888, Du Bois entered Harvard College as a junior and received his second bachelor's degree in 1890. He completed his graduate work at Harvard in 1895, where he was the first African American to receive a PhD.

Du Bois !

Explanation:

He was the first African to receive a Ph. D. from Harvard University. (in 1895)

Correct me if I'm wrong, please !

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.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.