i can only assume it was something the poles didnt want... at that point the soviet union had all the east slavic countries in yugoslavia had all the south besides bulgaria... czechoslovakia obviously had our mix. its a bit strange to me. we're so small now that it actively hurts us in regards to imperialism. but we all speak the same language almost, if we were all united things would be better. then we could even teach people a general slavic dialect in schools to help with basic language skills