How did the Thirteenth Amendment expand the rights of African Americans?

ABy establishing separate-but-equal schools
BBy eliminating poll taxes and literacy tests
CBy prohibiting segregation
DBy abolishing slavery

Verified Answer :

The Thirteenth Amendment expanded the rights of African Americans "D. By abolishing slavery," since this was the first of three major "Reconstruction Amendments" passed after the Civil War. 

Answer:

D, by abolishing slavery

Explanation: