Answer:
Option: B. forts
Explanation:
Forts played a pivotal role in the Western frontiers as they served as a military post. The majority of the forts in the frontiers constructed with woods that surround many buildings including barracks, officers quarters, stables, storehouses, and a parade ground. Forts defended soldiers and pioneers from the hostile Native Indian. The establishing of forts became necessary because native Indians were angry as the white settlers began to capture their land for cultivation and other purposes.
