The Republic of Austria is a federal state. According to the Austrian Constitution, first enacted in 1920, legal powers are exercised either by the Bund (Federation) or the Länder (provinces namely: Burgenland, Kärnten, Oberösterreich, Niederösterreich, Salzburg, Steiermark, Tirol, Vorarlberg, and Wien). Legislative powers are divided between the federal parliament called Nationalrat (acting together with the Bundesrat (2nd chamber) and provincial parliaments called Landtage.