linguistic:paraphrasing, structural:expansion, structural:summarization, quality:correction
17th and 18th centuries

In the second half of the 17th century and most of the 18th, Poznań was severely affected by a series of wars, attendant military occupations, lootings and destruction – the Second and Third Northern Wars, the War of the Polish Succession, the Seven Years' War and the Bar Confederation. During the Deluge, Poznań's Jewish community was accused of collaborating with the invading Swedish enemy, and as a result suffered pogroms carried out by both the city's non-Jewish residents and units of the Polish Crown Army.

It was also hit by frequent outbreaks of plague, and by floods, particularly that of 1736, which destroyed most of the suburban buildings. The population of the conurbation declined from 20,000 around 1600 to 6,000 around 1730, and Bambergian and Dutch settlers (Bambers and Olęders) were brought in to rebuild the devastated suburbs. In 1778, a "Committee of Good Order" (Komisja Dobrego Porządku) was established in the city, which oversaw rebuilding efforts and reorganized the city's administration. However, in 1793, in the Second Partition of Poland, Poznań came under the control of the Kingdom of Prussia, becoming part of (and initially the seat of) the province of South Prussia.