> the fact that it was abandoned shows that their society wasn't able to maintain it in the long term
A flood, drought, climate change, war or better jobs elsewhere were common reasons for abandoning locations. We have many abandoned projects today, that doesn't have to say anything about social structures.
A flood, drought, climate change, war or better jobs elsewhere were common reasons for abandoning locations. We have many abandoned projects today, that doesn't have to say anything about social structures.