European watershed area of the Rhine, which empties into the North Sea via the Netherlands, and the Danube, which flows eastward emptying into the Black Sea. It enters Austria at Piz Buin in the Silvretta Alps running along the Arlberg massif and forming the border between the states of Tyrol and Vorarlberg. It reaches Bavaria, Germany via the crest of the Allgäu Alps and leaves the High Alps at the Adelegg range near Kempten. Within the Alpine foothills it runs north of the Schussen catchment area of Lake Constance towards the sources of the Brigach and Breg headwaters of the Danube in
States of the Weimar Republic occupied by the last state premier. The names of these new "Reichsgaue" were sometimes different and there were some differences in borders. The former states of Burgenland and Vorarlberg were dissolved. The "Reichsgaue" were as follows: Subsequently, additional "Reichsgaue" were added as Germany invaded more European territories before and during World War II. These included: After World War I, the Saar Basin was occupied and governed jointly by the United Kingdom and France from 1920 to 1935 under a League of Nations mandate. After a plebiscite was held in 1935, the region was returned to Germany. In accordance with the