I did miss some of your plans and some of you fights :confused:
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https://i.ibb.co/CMGmG7t/image.png
IMO these are core lands. Northern Russian population differs a lot from Central and Southern. There are few ethnic minorities on highlted territories but Russians living there are typical Slavic Russians. Central Russia Russians are closer to Poles than to Northern Russians.
Where Tatars are abundant. :coffee:
ukraine