The communist German Democratic Republic was established in the historic "Mitteldeutschland" ( Middle Germany ). Former German territories east of the Oder and Neisse rivers, mainly the Prussian provinces of Pomerania , East Prussia , West Prussia , Upper Silesia , Lower Silesia , the eastern Neumark of Brandenburg , and a small piece of Saxony were thus detached from Germany. To compensate Poland for the USSR's annexation of its eastern provinces, the Allies provisionally established Poland's post-war western border at the Oder–Neisse line at the Yalta Conference (1945). As a result, most of Germany's central territories became the Sowjetische Besatzungszone (SBZ, Soviet Occupation Zone). All other lands east of the Oder–Neisse line were put under Polish administration, with the exception of historic northern East Prussia , which went to the USSR. 
His rhetorical style and the little digs included in the catalogue are often aimed at the art world created and shaped by the West. Rehberg also writes that it's possible to observe, in the case of current stars such as Neo Rauch, "that he's looking to cover the tracks" that connect him back to role models such as Bernhard Heisig and Werner Tübke, as well as those that connect "to his own works created before 1990." Rehberg accuses painters Georg Baselitz and Gerhard Richter, who also chose to leave East Germany, of having "an attitude of moral superiority."