 Ramba uchiverenga ndima ino - Maererano nokuverengwa kwevanhu kwakaitwa muPrussian muna 1910, guta reRatibor raiva nevanhu 38 424, avo vanenge 60 vaitaura chiGerman, 30 vaitaura chiPolish uye 10 vaitaura mitauro miviri. Pashure peHondo Yenyika I, plebiscite yeUpper Silesianrakaitwa muna 1921, umo 90,9 yemavhoti muguta reRatibor akanga ari eGermany uye 9,1 akanga ari ePoland. Somugumisiro, taundi rakaramba riri muGermany, sechikamu chePrussian Province yeUpper Silesia, uye yakava guta remuganhu, nepo dunhu razvino reBrzezie, riri kumabvazuva kweOder rakadzoserwa kuPoland. Nazi Germany yakawedzera kutambudza varwiri vomunharaunda vePoland kubvira muna 1937. Muna May 1939, vaGermany vakatsvaka bazi romunzvimbomo reUnion of Poles muGermany ndokusunga vose vari vaviri munyori waro Leon Czogała naLudwika Linderówna, mushandi weAssociation of Polish Women yomunzvimbomo. Muna June 1939, Gestapo yakatora dzimbahwe remasangano echiPolish emunzvimbomo, iro rakanga rava kuendeswa kuHitler Youth, nepo raibhurari yePoland namagwaro zvakatorwa. 