Context: In 1952, following a referendum, Baden, Württemberg-Baden, and Württemberg-Hohenzollern merged into Baden-Württemberg. In 1957, the Saar Protectorate rejoined the Federal Republic as the Saarland. German reunification in 1990, in which the German Democratic Republic (East Germany) ascended into the Federal Republic, resulted in the addition of the re-established eastern states of Brandenburg, Mecklenburg-West Pomerania (in German Mecklenburg-Vorpommern), Saxony (Sachsen), Saxony-Anhalt (Sachsen-Anhalt), and Thuringia (Thüringen), as well as the 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 voted in favour of the merger.

Question: Which city did Baden, Württemberg-Baden, and Württemberg-Hohenzollern merge into?
Answer: Baden-Württemberg

Question: In what year did Baden, Württemberg-Baden, and Württemberg-Hohenzollern merge?
Answer: 1952

Question:  In 1957, the Saar Protectorate rejoined the Federal Republic as which city?
Answer: Saarland

Question: When did the German reunification take place?
Answer: 1990

Question: Why did a regional referendum in 1996 to merge Berlin with surrounding Brandenburg fail?
Answer: failed to reach the necessary majority vote in Brandenburg

Question: In 1957 what merged into Baden-Wurttemberg?
Answer: Unanswerable

Question: What did a majority of Berliners vote for in 1957?
Answer: Unanswerable

Question: What happened to the referendum in 1990 to merge East Berlin with Saxony?
Answer: Unanswerable

Question: In what year did the Brandenberg reunification take place?
Answer: Unanswerable

Question: What did the Baden Protectorate rejoin in 1990?
Answer: Unanswerable

Question: Which areas merged together in 1957?
Answer: Unanswerable

Question: When did Saarland leave the Federal Republic?
Answer: Unanswerable

Question: What states became Berlin in 1980?
Answer: Unanswerable

Question: What year did Baden split from Württemberg-Baden, and Württemberg-Hohenzollern
Answer: Unanswerable

Question: In 1980 which country was reunified?
Answer: Unanswerable