1. Alright-I don't think the Cook Islands were ever under Tongan rule
-Georgia should be bigger, extending east more
-Kilwa goes too far inland and should be more restricted to the coast
-Norse Greenland (as far as I know) was a colony of Iceland rather than an independent entity
-Rapa Nui should just be the one island and not that one further east
That's pretty much it, everything else is perfect as far as I can tell
2. The Khwarazmian Sultan captured Tbilisi in 1226
3. I thought Kilwa was pretty coast-restricted when I made it but if you think it extends too far inland I'll fix that
4. I couldn't find any evidence for Greenland being part of the Icelandic Commonwealth and in any case I'm pretty sure they were de facto independent
5. Alright