How did the Constitution expand African Americans' rights in 1870?

A. It declared that segregated facilities must be equal.

B. It prohibited enslavement or involuntary servitude.

C. It protected the voting rights of African American men.

D. It guaranteed African Americans due process of the law as

citizens

he Thirteenth Amendment made it illegal for anyone to force another person to work for them and specially not pay them. D is the anwser

Explanation:

The 15th Amendment granting African-American men the right to vote was adopted into the U. S. Constitution in 1870 ... It wasn't until the Voting Rights Act of 1965 that legal barriers were outlawed at the state and local levels if they denied African-Americans their right to vote under the 15th Amendment.

C. It protected voting rights of African American men

Explanation:

The 15th amendment granted the right to vote to African Americans