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.
Burgenland region. After the dissolution of the manors in the mid-20th century this group ceased to exist. In addition to Germans, Croats and Hungarians, Burgenland used to have substantial Roma and Jewish populations, wiped out by the Nazi regime. Before their deportation during 1938, the traditionally very religious Burgenland Jews were concentrated in the famous "Seven Communities" (Siebengemeinden/Sheva kehillot) in Eisenstadt, Mattersburg, Kittsee, Frauenkirchen, Kobersdorf, Lackenbach and Deutschkreutz, where they formed a substantial part of the population: e.g. in Lackenbach, 62% of the population was Jewish as of 1869. After the war, Jews from Burgenland founded the Jerusalem haredi neighbourhood of