Article V of the Constitution of the Duchy of Warsaw, which Napoleon dictated to Saxony, was linked to the Polish Constitution of 1791 and joined the Duchy of Warsaw hereditarily to the Royal House of Saxony Geopolitically the Duchy of Warsaw comprised the areas of the 2nd and 3rd Prussian partitions (1795), with the exception of Danzig (Gdańsk), which was made into the Free City of Danzig under joint French and Saxon "protection", and the district around Białystok, which was given to Russia. The area under Prussian control was made up of territory from the former Prussian provinces of New East Prussia, Southern Prussia, New Silesia, and West Prussia. In addition, the new state was given the area along the Noteć river and the "Land of Chełmno".