Answer:
states' rights to own slaves
Explanation:
The doctrine of Nullification is based on the idea that states in the United States have the jurisdiction to nullify or void any form of federal law that does not go along with the United States Constitution.
Therefore this doctrine of nullification led to the philosophy supporting "states' rights to own slaves."
This is because it is not outrightly stated in the Constitution at some point that holding slaves is a criminal offense that requires punishment.
