Mezue ahịrịokwu na-esonụ: The nke abụọ Greater Poland Inupụ megide Prussian agha (na-n'okpuru General Dąbrowski) tiwapụrụ na Wielkopolska (Greater Poland) na 1806, n'ihu nke
Napoleon meriri Prussia kpamkpam, onye kere Duchy nke Warsaw na 1807. Otú ọ dị, ọdịda nke Napoleon n'oge Mgbasa Ozi Russia ya dugara n'iwepụ "Duchy" na Congress nke Vienna (1815) na nloghachi nke njikwa Prussia.