In the period since 1900, scientific and technological advances have been made with the intention of increasing efficiency, comfort, and security in societies around the world, Develop an argument that evaluates the extent to which scientific and technological advances have benefited human societies in this period.

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.

b. they tried to evict the squatters from the area.

so sorry if wrong