[quote=@The Nexerus]
The map in the OP is incorrect for 1821. [url=https://en.wikipedia.org/wiki/Treaty_of_Gulistan]Russia should control the Caucasus[/url], it doesn't make sense to show the personal union between the Netherlands and Luxembourg as one state but not Norway and Sweden, etc. Not necessarily advising that it be edited, just not taken as authoritative.
[/quote]

I tired to found other maps that were in 1821, but they searches lead me to nowhere. I was thinking of moving up the date from 1821 to 1836, since there are maps for the year.

If you guys find better maps than this or find more errors, please tell me and I will try to fix the map.

[quote=@duck55223]
Potentially interested, keeping a eye on this.

I am assuming we have to keep everything historical, and can't modify anything?
[/quote]

Yes, we are keeping it historical with some modifications to make it not entirely historical.