If you sacrifice virgins to moon gods, you might need to be extinct. islam is only alive because they use force on the innocent.
All others likely got mixed up in a natural disaster.
Yeah, natural disaster was in the Med. Sea. Earth Quake. tidal wave. Villages near the shore were wiped out. St. Louis. Huge flood wiped out the 40,000 people. Drought or flood. Or poor sanitation with lots of bad germs will depopulate a city. A side note: 700 BC the Nubians of Africa had tetracycline naturally occurring in the soil. They made beer with the antibiotic and had good health.
Or too many generations of Dim-O-crat rule.
Pretty much the same results.