Answer:
The Answer is C ( Although i am not sure)
Explanation:
The answer is Violence related to slavery.
Because frontier settlers had many disasters encountered.
They are detached so many times, they are attacked, their horses got stolen,
suffered a shortage of food and they are finding for golds that invaded by the
Land of Native Americans. Settlers are interested too because Native Americans
have the capacities for civilization.
Explanation:
The answer would be C or Marine
