Frontier town is a place where people move to live with their consent. They willingly move to that particular place. The small number of people living there, the government does not control those areas. However, when the area got populated, frontier towns are usually turned into small cities. Because of the number of people, facilities are being provided to them. And thus, govt. Can take control over that town.
Main Reason:
The other main reason for turning the frontier town into a small city is to have a check and balance. People get out of control when there is no particular way of dealing and the jungle's law being implemented. To make sure and avoid these types of disturbance, frontier towns are being turned into small cities.
