Mezue ahịrịokwu na-esonụ: Tupu 1945 obodo nta ahụ bụ akụkụ nke Germany (East Prussia) ma mara dị ka Albrechtsdorf. Mgbe Agha Worldwa nke Abụọ gachara, e debere mpaghara ahụ n'okpuru nchịkwa Polish site na Nkwekọrịta Potsdam n'okpuru mgbanwe mpaghara nke Soviet Union chọrọ. Ihe ka ọtụtụ ná ndị Germany
gbara ọsọ ma ọ bụ chụpụ ma were ndị Poland chụpụrụ site na mpaghara Polish nke Soviet Union gbakwunyere ma ọ bụ ndị Ukraine manyere ịkwaga na mpaghara ahụ site na Operation Vistula na 1947.