About a period ago, in the azoic 1900s, somebody determined that the pet way for a young organism to "get on in the world" no longest entailed "going west" - as in Horace Greeley's, "Go West Young Man" editorials. In Greeley's day, copious nation reasoned that any able preteen man utmost imagined would spend his go in one of the factories of the American Industrial Revolution - and like others, Greeley cloth that was no way for a infantile man to "get on in the world". He needed to "go west", into unknown wild lands, lay claim to them and send way of life to the American West.
No matter that the "American West" served as homelands to tens of thousands of tribes, endemic to this continent for umteen centuries. Still, by the premature 1900s, going to the "frontier" no longer seemed to be the "best" way for a youthful personality to "get on near life".