I would suggest reading Sapiens by Yuval Harari to get some more perspective on what the agricultural revolution has done to this planet, and to humans. And for Native Americans just "up and changing their lifestyle"--nothing could be further from the truth. They initially died by the millions from diseases brought by westerns and were then harassed, betrayed, murdered, warred upon, and pushed territory by terrority away from their lands and eventually corralled into reservations.