Hi! I've been getting back into Skyrim recently, but I tend to get really confused by all the lore that I don't know at all. I'm playing a dark elf and was wondering...

What's with Morrowind? I know that the volcano sneezed and left dusty boogers over it, but it doesn't cover all of it, does it? One of the elves in the Grey Quarter talked about wanting to go back, and it made me wonder whether all of it was inhabitable or difficult to live in, or just a very significant portion.

Are there other factors that keep them from going home? I saw argonians mentioned somewhere, but I wasn't sure about the details. And how do the dark elves feel about the Empire in general + why? Finally, with the conditions in Windhelm ranging from poverty, sickness, and racism, what stops the dunmer from leaving and going to, say, Solitude?

I'm trying to find out a lot of the answers here by myself, but with all the tons of lore TES has, I'm hoping y'all can help me out a little. Thank you!