I think a more interesting historical event to study for insight into what may lead to an advanced society to collapse is the late Bronze Age collapse, which se

I think a more interesting historical event to study for insight into what may lead to an advanced society to collapse is the late Bronze Age collapse, which seems to have been caused by a perfect storm of events (from what I've read about it, at least. I'm no expert) leading multiple interconnected civilisations to collapse in a short (100 year or so) time frame.