States of Germany equivalent to those of the ministers in the larger states. The equivalent of the minister-president is the "Senatspräsident" (president of the senate) in Bremen, the "Erster Bürgermeister" (first mayor) in Hamburg, and the "Regierender Bürgermeister" (governing mayor) in Berlin. The parliament for Berlin is called the "Abgeordnetenhaus" (House of Representatives), while Bremen and Hamburg both have a "Bürgerschaft". The parliaments in the remaining 13 states are referred to as "Landtag" (State Parliament). The city-states of Berlin and Hamburg are subdivided into boroughs. The City of Bremen consists of two urban districts: Bremen and Bremerhaven, which are not contiguous. In the
States of Germany the . German reunification in 1990, in which the area of the German Democratic Republic (East Germany) became part of the Federal Republic, was performed by the way of ascent of the re-established eastern states of Brandenburg, Mecklenburg-West Pomerania ('), Saxony ('), Saxony-Anhalt ('), and Thuringia (') to the Federal Republic, as well as the de-facto reunification of West and East Berlin into Berlin and its establishment as a full and equal state. A regional referendum in 1996 to merge Berlin with surrounding Brandenburg as "Berlin-Brandenburg" failed to reach the necessary majority vote in Brandenburg, while a majority of Berliners