Winner
Diverse in Unity
About the genetics maps: I've seen them before and they prove what we knew all along - Czechia is a mix of Mediterranean (probably Celtic?), Slavic, Germanic and Jewish genetic markers. As always, these maps reveal how foolish it is to believe in some sort of genetically uniform "races" in Europe 
Few hints:
Silesia doesn't make any sense. Squonk gave you a map so I don't need to expand on that.
About the Czech Rep.: Moravia doesn't really want to separate, but I wouldn't mind either - we simply can't stand certain people from Prague
The thing is that Moravia itself is more diverse than the rest of the republic. You could split it into more parts (southern Moravia is quite culturally distinct from north-east Moravia).
What about the Hungarians in Slovakia? Autonomy!
(EDIT
I can't believe you left Ukraine in one piece. Eastern Ukraine should be either independent or joined with Russia.
(EDIT2
What about southern Tyrol? The german-speaking population would surely like to rejoin Austria...
I hope their dreams come true. Silesia is a pretty useless part of this country

Edit: here we go
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It's a WIP, so feel free to comment, etc.
If the same color is separated only by one nation, it's connected (i.e Czech Rep. is split in two by Moravia, the Republika Sprska in the Balkans) (...)
( I was aiming to illustrate Upper Silesia. Any tips on modifying it? It was kind of hard to find a map, even w/ google and wiki.
Few hints:
Silesia doesn't make any sense. Squonk gave you a map so I don't need to expand on that.
About the Czech Rep.: Moravia doesn't really want to separate, but I wouldn't mind either - we simply can't stand certain people from Prague

What about the Hungarians in Slovakia? Autonomy!

(EDIT

(EDIT2

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This is Upper Silesia of the autonomists' dreams. On both sides of the border. Although there are Silesians west to Frydek as well.
I hope their dreams come true. Silesia is a pretty useless part of this country
