Most of
Polish Royal Prussia was annexed by King
Frederick the Great of Prussia in the 1772
First Partition of Poland. The town of Marienwerder, previously in
Ducal Prussia, became an administrative capital of the newly acquired territory, which became the province of West Prussia on 31 January 1773. West Prussia was divided into the regions of
Danzig and Marienwerder in 1815, following the
Napoleonic Wars. While the governor and provincial authorities were based in
Danzig (Gdańsk), the (1772–1943) was in the homonymous town. From 1815 to 1818, West Prussia was reorganised into
districts (or Kreise), within each government region. The Marienwerder Region included the rural districts (
Kreise) of (1818–1920), (1887–1920), (1772–1945),
Flatow (1818–1945), (1818–1920), (1772–1920), (1818–1920),
Marienwerder (1752–1945), (1818–1945),
Schlochau (1818–1945), (1818–1920), (1818–1920), (1818–1945), (1818–1920), and (1875–1920). Up until 1920, the Marienwerder Region comprised the urban districts (
Stadtkreise) of
Graudenz (Grudziądz) and
Thorn (Toruń), both established on 1 January 1900. The Marienwerder Region was placed under an
inter-Allied commission from 1920 to 1922 and was eventually divided, with the western districts included within the newly established
Polish Republic as part of the so-called
Polish Corridor. The eastern part of Marienwerder that
voted to be incorporated within the
Weimar Republic was named the
Region of West Prussia () while it was joined to the
Province of East Prussia from 1922 to 1939, after which the original Marienwerder Region was restored until its dissolution in 1945. == Demographics ==