b: forts, many forts were built while heading west and provided a mostly safe and easy to defend place for traders to stop and settlers to live.
One interesting feature of the US constitution is that it is, divided into only three distinct articles and is one of the longest documents of its type.
Shouldn't this be a personal opinion in your own words? I mean I might be able to help you get started but I think this wants your opinion or view.
C, a are the answers i think