As the disadvantages of national division were becoming increasingly apparent in various segments of the society, some of the Piast dukes began to make serious efforts aimed at the reunification of the Polish state.
Kuna riikliku killustatuse puudused said erinevates ühiskonnakihtides üha selgemaks, hakkasid mõned Piastide hertsogid tegema tõsiseid jõupingutusi eesmärgiga Poola riik taasühendada.