I highly recommend the book "Collapse" by Jared Diamond on the matter. It is a highly detailed account of what happened in the past when societies collapsed. Mo

I highly recommend the book "Collapse" by Jared Diamond on the matter. It is a highly detailed account of what happened in the past when societies collapsed. Most if the time they consumed more resources than what their environment would provide. Many of them then failed, wars and genocides occured that reduced the population to below sustainable levels, or people sinply starved. Others managed to turn around and started to manage resources properly. There's a talk by the author on Youtube that summarizes the book. https://youtu.be/wpkS1xym0HA https://youtu.be/wpkS1xym0HA