The correct answer is: The Southern states needed to make changes to their laws to be readmitted to the Union.
The First Reconstruction Act, passed in 1867, established requirements for Southern states to follow in order to be readmitted into the Union following the Civil War. This included the requirement to create new state constitutions that guaranteed universal male suffrage and to ensure civil rights for freedmen, leading to changes in state and local policies in Texas and other Southern states.