Answer:
Advances: The freeing of the slaves through the Thirteenth Amendment, the giving of citizenship to African Americans through the Fourteenth Amendment, and the protection of voting rights through the Fifteenth Amendment
Setbacks: The black codes restricted
A. Andrew Johnson was president from 1865 when Lincoln was assassinated to 1859, where he lost reelection to Ulysses S. Grant.
The correct answer is A. While the states are free to make their own laws they cannot make laws that violate the constitution. For example a state cant legalize murder.