Dee ihe ndị ọzọ dị na paragraf a - Tupu afọ 1945, ebe a bụ akụkụ Germany (East Prussia). 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 gbapụrụ
ma ọ bụ chụpụ ha ma were ndị Poland chụpụrụ site na mpaghara Polish nke Soviet Union gbakwunyere ma ọ bụ ndị Ukraine manyere ịbanye na mpaghara ahụ site na Operation Vistula na 1947.