Why was the us willing to go to war to secure the west?

The U.S. was willing to go to war to secure the West due to a combination of factors, including the belief in Manifest Destiny, which held that American expansion across the continent was divinely ordained. Economic opportunities, such as access to fertile land, resources, and trade routes, also motivated westward expansion. Additionally, the desire to remove Native American tribes and establish American governance in these territories further fueled the willingness to engage in conflict. Thus, a mix of ideological, economic, and territorial ambitions drove the U.S. to war in pursuit of westward expansion.