How were slavery, equal protection under the law, and voting rights for black men addressed following the civil war? by giving freed slaves 320 acres to farm through the thirteenth, fourteenth, and fifteenth amendments by establishing a new federal agency to work on behalf of former slaves with laws that applied only to the confederate states

The correct answer is:

Through the Thirteenth, Fourteenth, and Fifteenth Amendments.

The Reconstruction Amendments are the Thirteenth, Fourteenth, and Fifteenth amendments to the United States Constitution, adopted between 1865 and 1870 immediately after the Civil War.

The Thirteenth Amendment abolished slavery and involuntary servitude, except for those duly convicted of a crime. The Fourteenth Amendment addresses citizenship rights and equal protection of the laws for all persons. The Fifteenth Amendment prohibits discrimination in voting rights of citizens on the basis of race, color, or previous condition of servitude.