Burgenland of Hungarians rapidly declined (14,931 people, 5%). This was due to the emigration of the Hungarian civil servants and intellectuals after the union with Austria. In 1923, emigration to the United States of America, which started in the late 19th century, reached its climax; in some places up to a quarter of the population went overseas. After the Nazi German "Anschluss" of Austria, the administrative unit of Burgenland was dissolved. Northern and central Burgenland joined the district of Niederdonau (Lower Danube) while southern Burgenland joined Steiermark (Styria). The policy of Germanization also affected other minorities, especially Burgenland Croats and Hungarians.
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