What are the leading theories on how the Bronze Age ended and why it ended with such devastation? And how was it not a demonic uprising and/or alien invasion?

by DamntheTrains

Vespertine

There are a number of older threads on this topic, including this AMA with Eric Cline, author of 1177BC aka u/ehcline . He also contributed to this thread in which u/tweedyimpertinence provided an overview