Question: when did the two halves of germany reunite
Answer: The German reunification ( German : Deutsche Wiedervereinigung ) was the process in 1990 in which the German Democratic Republic ( GDR ( German : DDR ) / East Germany ) became part of the Federal Republic of Germany ( FRG ( German : BRD ) / West Germany ) to form the reunited nation of Germany , and when Berlin reunited into a single city , as provided by its then Grundgesetz constitution Article 23 .