Rubuta ci gaba don wannan sakin layi - An san babban taron Sejm mai tsawo wanda Stanisław August ya kira a 1788 a matsayin Babban, ko Shekaru Hudu. Babban nasarar da Sejm ya samu shine zartar da Tsarin Mulki na 3 ga Mayu, na farko a cikin Turai ta zamani da ke da babbar doka ta jihar. Takarda mai gyara amma mai tsaka-tsaki, wanda masu sukar juyin juya halin Faransa suka zarge shi da nuna juyayi, ba da daɗewa ba ya haifar da adawa mai ƙarfi daga manyan mashahuran masarautar Commonwealth da Catherine II, waɗanda suka ƙuduri aniyar hana sake haihuwar Commonwealth mai ƙarfi. Tarayyar Targowica ta masu daraja ta yi kira ga Empress don taimako kuma a watan Mayu 1792 sojojin Rasha sun shiga yankin Commonwealth. Yakin kare da sojojin Commonwealth suka yi
ya ƙare lokacin da Sarki, ya gamsu da rashin amfani da juriya, ya mika wuya ta hanyar shiga Tarayyar Targowica. Tarayyar ta karɓi gwamnati, amma Rasha da Prussia a cikin 1793 sun shirya kuma sun aiwatar da Raba na Biyu na Commonwealth, wanda ya bar ƙasar tare da yankuna masu mahimmanci, kusan ba su da ikon wanzuwar kansu.