Question

Based on the supremacy clause, the _____ holds that state and federal laws that conflict must yield to the superior law, which is federal law. separation of powers takings clause doctrine of preemption substantive due process dormant commerce clause

Answer 1

I believe the answer is: Doctrine preemption

Under Doctrine preemption, states governments are not allowed to make regulations that contradict the regulation made by the federal government.
This regulation is made in order to ensure that the states wouldn't rebel and act toward the opposite direction of national interest.