The Supremacy Clause is a clause within Article VI of the U.S. Constitution which dictates that federal law is the "supreme law of the land." ... Under the doctrine of preemption, which is based on the Supremacy Clause, federal law preempts state law, even when the laws conflict.
Can you explain it a bit better?
<span>Well, what then are the three top responsibilities, let’s say, of the federal government?” asked Mark Levin. “I agree with him [Donald Trump] on one of them – security. National security, national defense, really only the federal government has the wherewithal, you know, to fight wars and to secure the entirety of the United States.”</span>
I think c may be the closest answer
The addition of new resources often enables a nation to advance economically and technically. They are able to make new tools and conduct new experiments. New resources also make a nation able to make money by trading that item to another nation.
