Europe is divided and united, depending on who you ask. The flag for the Silesian Autonomy movement is balanced with the flag of Ukraine. They are inverts of each other. Right now, there is small yet very vocal minority of Selesians in Poland who want more autonomy, and a few who want to break away to become their own nation. Selesians speak a dialect that is different for mainstream Polish. Who knows? Maybe in 50 years, as old nations of Europe devolve, perhaps Silesia will one day separate from Poland?
Right now, in Ukraine it is undergoing a violent spasm of separation as induced by more powerful forces from within and across the world. No doubt in 2072, fifty years from now, the Ukraine of today will look nothing like the Ukraine of 2072 and neither will Poland.