The American frontier psychology was much like the frontier psychology of the Israelites during the Age of Judges in the Old Testament. The problems of the Israelites in settling Canaan were akin to the problems the frontiersmen faced in subjugating the American wilderness. As the frontiersmen never recognized any rights of the Indians to the land, they had no more guilt feelings about displacing the Indians than the Israelites had had about displacing the Canaanites. The American continent to the colonists was as much the Promised Land to them as Canaan was to the Israelites.
Dimont, Max I. The Jews in America (Kindle Locations 591-595). Open Road Media. Kindle Edition.