South Prussia
After the First Partition of Poland in 1772, the newly annexed Royal Prussia and Warmia became the Province of West Prussia, while the Duchy of Prussia (along with part of Warmia) became the Province of East Prussia. Other annexations along the Noteć (Netze) River became the Netze District. Following the second and third partitions (1793–1795), the new Prussian annexations became the Provinces of New Silesia, South Prussia, and New East Prussia, with the Netze District redivided between West and South Prussia. These three provinces were ultimately lost to Congress Poland after the Congress of Vienna in 1815, except for the western part of South Prussia, which would form part of the Grand Duchy of Posen.