I guess one question there would be which Greek civilisation - there was a significant collapse of civilisation (the "Late Bronze Age collapse") starting around

I guess one question there would be which Greek civilisation - there was a significant collapse of civilisation (the "Late Bronze Age collapse") starting around 1200BC or so: https://en.wikipedia.org/wiki/Late_Bronze_Age_collapse https://en.wikipedia.org/wiki/Late_Bronze_Age_collapse The works of Homer, written down much later, are probably based on oral histories of the times before this collapse. There still seems a lot of debate as to what caused this widespread collapse. What I find fascinating is that there are vast ruins like Gla that aren't even mentioned by Homer that appear to date from just before this time: https://en.wikipedia.org/wiki/Gla https://en.wikipedia.org/wiki/Gla