What did the 14th amendment do for African Americans?

to the Constitution of the United States that granted citizenship and equal civil and legal rights to African Americans and slaves

Fourteenth Amendment, amendment (1868) to the Constitution of the United States that granted citizenship and equal civil and legal rights to African Americans and slaves who had been emancipated after the American Civil War, including them under the umbrella phrase “all persons born or naturalized in the United States.

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https://www.britannica.com/topic/Fourteenth-Amendment#:~:text=Fourteenth%20Amendment%2C%20amendment%20(1868),naturalized%20in%20the%20United%20States.

answer; having the power of reprieve means being able to release people from punishment;