As I am thinking you mean "Producers" when you say "Sellers" I am going to go with, Yes. You are correct it is Supply.
(Also the other one is called Demand not price)
A. It's managed by the state
Education is controlled and managed by the state
The main aim of the Northwest Ordinance of 1787 was to stipulate how new states would be created.
Answer: i don't know sorry
Explanation:
Usually people would settle wherever they could find rich soil and a water source. so mountains were one of the main places that people settled in early civilization.