China is the right answer
Http://www.biography.com/people/thurgood-marshall-9400241
go to this website and it will help you
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.