Answer:
c. Establishing towns throughout the Great Plains as part of American expansion
Explanation:
The American cowboy is a person who wears a hat, jean faded trousers and cloths with a gun attached around his waist moving from one location to another. They always move in group with the aim of trying to establish towns in areas where their existence are not through domination and setting up of a town leadership controlled by them.
The travel throughout the great plains of America unlike what is shown in the movies as people always looking out for trouble or trying to test their manhood by engaging in gun duel.