The Indians could not undertake any widespread cultivation of the plains not only because they lacked iron tools but also because they had no draft animals. ↗
They weren't immigrating to some existing society; indeed, they often did whatever they could do to destroy whatever existed here in the way of Indian society. ↗
An Indian's dress of deer skins, which is wet a hundred times upon his back, dries soft; and his lodge also, which stands in the rains, and even through the severity of winter, is taken down as soft and as clean as when it was first put up. ↗