Gau (territory) Austria in 1938, the country, briefly renamed "Ostmark" between 1938 and 1942, was sub-divided into seven "Reichsgaue". These had boundaries broadly the same as the former Austrian "Länder" (states), with the Tyrol and Vorarlberg being merged as "Tyrol-Vorarlberg", Burgenland being divided between Styria and "Lower Danube" ("Niederdonau", the renamed Lower Austria). Upper Austria was also renamed "Upper Danube" ("Oberdonau"), thus eliminating the name of "Austria" ("Österreich" in German) from the official map. A small number of boundary changes also took place, the most significant of which was the massive expansion of Vienna's official territory, at the expense of "Lower Danube".
Burgenland 1990 Burgenland regained its traditional role as a bridge between the western and eastern parts of Central Europe. Cross-border links were strengthened when Hungary, Slovakia and Slovenia joined the European Union in 2004. All three countries became part of the Schengen zone in late 2007 when border controls finally ceased to exist in the region. Burgenland has notable Croatian (29,000–45,000) and Hungarian (5,000–15,000) populations. The Croats arrived after the devastating Ottoman war in 1532, when the Ottoman army destroyed some settlements in their ethnic territory. The emigration in great haste of the Catholic remained population of western Slavonia into the