The fourteenth amendment
answers:
a. abolished slavery
b. gave citizenship to the slaves
c. gave everyone the right vote
d. made it illegal to discriminate against people based on race

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. ...

The amendment grants citizenship to "all persons born or naturalized in the United States" which included former slaves who had just been freed after the Civil War.

The answer would be B.

b. second continental congress

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: