* 540AD (Dark Ages)
* 44BC (Death Of Caeser)
* 207BC (Start Of Han Dynasty)
* 1159BC (End Shang Dynasty - David Plague)
* 1628BC Stonehenge Abandoned - Exodus Of Moses)
* 2354BC (Bronze Age Starts - Flood Of Noah, Ussher date)
* 3195BC (Stoneheng Built - Start Of Egyptian Civilization)
1258 AD- Hulegu Quan destroys Baghdad, ends Abbasid Caliphate.
Not all events that occur in tandem with a volcanic eruption are bad.