Eastern Poland wasn't founded on ethnic cleansing (or if it was, it didn't occur in the 20th century), so Eastern Poland.
What is now 'Eastern Poland' used to have the largest Jewish population on the planet. I gather that this is no longer the case. Of course it wasn't the Poles that did that, but then it mostly wasn't the Poles that removed (in an
infinitely less evil way, of course) the Germans from Silesia and so on. Pretty much the entire of Central and Eastern Europe was 'founded' on 'ethnic cleansing.' Thank you, nationalism.
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