What three amendments to the U. S. Constitution did the Southern states have to ratify if they re-entered the Union?

Southern states were required to ratify the Fourteenth Amendment before being readmitted to the union. The Fifteenth Amendment guaranteed African American men the right to vote. Most of the documents in this section are related to the right to vote and how voting actually occurred in Southern states.

macon. i believe thats the answer

sorry if im wrong.