Четырёхлетний сейм
representatives of 141 towns under royal charter ("miasta królewskie"), clad in black, passed peacefully (marching or in carriages) through the streets of Warsaw, from the town hall, reaching the Royal Castle (where members of the Great Sejm were meeting) and getting an audience with the king Stanisław August Poniatowski. The burghers demanded similar privileges to those held by the nobles ("szlachta"). Their demands included the right to buy and own land estates, the right to be represented in the Polish parliament (Sejm) and reforms to the urban law. The procession influenced the Great Sejm to create a Commission for the Cities ("Deputacja w sprawie miast").