The ideas of the Age of Enlightenment in Poland were developed later than in the Western Europe, as Polish bourgeoisie was weaker, and szlachta (nobility) culture (Sarmatism) together with the Polish-Lithuanian Commonwealth political system (Golden Liberty) were in deep crisis. The period of Polish Enlightenment began in the 1730s–40s, peaked in the reign of Poland's last king, Stanislaw August Poniatowski (second half of the 18th century), went into decline with the Third Partition of Poland (1795) – a national tragedy inspiring a short period of sentimental writing – and ended in 1822, replaced by Romanticism.