Mezue ahịrịokwu na-esonụ: Ruo 1945 mpaghara ahụ bụ akụkụ nke German Province nke East Prussia, ndị Soviet Red Army weghaara Kanditten na 18 February 1945 n'oge niile nke East Prussian Offensive. Mgbe Agha Worldwa nke Abụọ gasịrị, e debere mpaghara ahụ n'okpuru nchịkwa Polish dị ka Nkwekọrịta Potsdam nke post-war. Ndị Germany
gbara ọsọ ma ọ bụ chụpụ ma jiri ndị Poland dochie ha, ọtụtụ n'ime ha chụpụrụ site na mpaghara Polish nke Soviet Union jikọtara ma ọ bụ manyere ha ibi n'ógbè ahụ n'oge Operation Vistula na 1947.