hook: Approximately 20,000 people died while traveling on the Oregon Trail, this fact alone is nearly enough to support the idea that American western expansion, due to the manifest destiny, was not justified. However, some other reasons why America was not justified in its expansion were that the settlers treated the natives harshly and inhumanely for no discernible reasoning, also the traveling was too much of a gamble, and finally that modern-day America is against imperialistic expansion. background info: thesis: America was not justified in its western expansion due to the lack of morality behind putting one person’s comfort above the safety of another. claim 1: Modern day America is against the taking of another country’s land