I'm 90% sure it's a "noun clause"
The answer is A because before but there is always a coma
Answer: The westward expansion resulted in Native Americans move to another place that they did not like. The Westward expansion also drove Native Americans off their land. Many battles was fought and so many lives was lost. Native Americans was eventually forced to live on designated reservations
D. Work on it over several days and rewrite it at least twice.
