The members of a society do not make conscious choices in arriving at a particular way of life. Rather, they make unconscious adaptations. ...they kn… - Peter Farb

After the Spaniards settled the Southwest, the Navajo began another burst of cultural borrowing—or, more actually, stealing. Spanish ranches and villages were so depleted of horses—not to mention sheep—that by 1775 the Spaniards had to send to Europe for 1,500 additional horses. After the Pueblo Rebellion against the Spaniards was put down in 1692, many Pueblo took refuge with their Navajo neighbors—and taught them how to weave blankets, a skill for which the Navajo are still noted, and to make pottery. During this time the Navajo probably absorbed many Pueblo religious and social ideas and customs as well, such as ceremonial paraphernalia and possibly the Pueblo class system.

If you read Peter Farb's book, Man's Rise of Civilization, he goes through all these different cultures at first contact, and they very often figure out in very different ways, but typically the things that were in common among them, were that the idea of the accumulation of private property beyond your needs was considered a mental illness.

By the seventeenth century, observers had reached the firm conclusion that American Indians were in no way inferior to Whites, and many writers took special pains to salute the Noble Red Man. The Jesuit missionary Bressani... reported that the inhabitants "are hardly barbarous, save in name. ...marvelous faculty for remembering places, and for describing them to one another." ...can recall things that a White "could not rehearse without writing." Another Jesuit enthusiastically corroborates... "nearly all show more intelligence in their business, speeches, courtesies, intercourse, tricks and subtleties, than do the shrewdest citizens and merchants in France."