Rubuta ci gaba don wannan sakin layi - Frederick William, Duke na Prussia da Prince-elector na Brandenburg, sun nemi su sami Royal Prussia domin su haɗa da yankunan da ke cikin gida biyu. Wata dama ta faru ne lokacin da Charles X Gustav na Sweden, a ƙoƙarinsa na cinye Poland (duba Ruwan Ruwan Sweden
), ya yi alƙawarin ba da gudummawa ga Frederick William da Voivodships na Poland da Prussia na Chełmno, Malbork da Pomerania da kuma Yarima-Bishopric na Warmia, idan Frederick William ya goyi bayan yakin Sweden. Wannan tayin ya kasance mai hasashe tunda Frederick William zai yi alƙawarin tallafawa yaƙin neman zaɓe, yayin da ladan ya dogara da cimma nasara.