In what time period did the Progressive Era last?

1897

Explanation:

the progressive era took place between 1897 and 1920. it was a period of widespread social activism and political reform across the United States. the main objectives of the progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.

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.

the answer is a

explanation: