Modern medicine works. Prehistoric medicine is unknown because it is before history has recorded it. But let’s say that caveman found that they ate the leaves from the willow tree their headache went away. Aspirin is made from willow leaves.
The drug itself is the same. How medicine is practiced is totally different.
The federal government has power to control our national security spending, global independence, and economy. The federal government should also handle taxes and world relations.
The state should make laws, provide schools, and provide services to people such as Police, Emergency services, Garbage pick up. They maintain order in the community
That would be the federal reserve act