Kammala jumla mai zuwa: Bayan Raba Poland ta Biyu, a cikin 1793, Prussia ta haɗu da ita. 'Yan Poland sun sake dawo da shi a cikin 1807, an haɗa shi cikin Duchy na Poland na Warsaw na ɗan gajeren lokaci, a cikin 1815 Prussia ta sake haɗa shi. 'Yan Poland sun halarci duka a cikin tashin hankalin da ba a yi nasara ba na Greater Poland na 1848 da kuma nasarar Greater Poland na 1918-1919, bayan haka aka haɗa Kobylin da Poland, jim kaɗan bayan ta sake samun' yancin kai. A lokacin yakin duniya na biyu, Koźmin Wielkopolski ya kasance a karkashin
Aikin Jamus daga 6 ga Satumba 1939 zuwa 23 ga Janairu 1945.