During the period 5 (1844-1877), In what ways did the federal government respond

During the period 5 (1844-1877), In what ways did the federal government respond to the violence and intimidation that was sweeping the South?
a) It refused to act.
b) It expanded its powers to protect individual rights, empowered the military to ensure that citizens could vote, and created the Department of Justice to enforce Reconstruction.
c) It asked the Southern states to raise their own military units to deal with the violence