Well there were many theories back then as to what causes sickness or health however one of the main theory's was one which involved the elements. You see, many mid evil doctors thought that having too much of one of the four main elements could lead to sickness. For instance, lets say you had a fever. The doctor would say that you have to much fire in you and you should take a cold bath to get your frost elements up. I know by today's standards it sounds crazy but thats what they believed back then.
Answer:
The passage of the 13th Amendment led the South to pass Black Codes!
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The national monuments act have authority to the president, by executive order or proclamation
"<span>so that railroad companies couldn’t unfairly charge different rate". By making sure that things like rates were transparent in the market, the government was making sure that there would be no monopolies. </span>
It owned production, distribution and exchange. Kind of primitive communism.