As white southerners regain control of state governments following the end of civil war reconstruction reforms they begin to

Disenfranchisement after the Reconstruction Era in the United States of America, especially in Southern states, was based on a series of laws, new constitutions, and practices in the South that were deliberately used to prevent black citizens from registering to vote and voting. These measures were enacted by the former Confederate states at the turn of the 20th century. Efforts were made in Maryl

Explanation:

the answer would be:

b. race