In welchem Zeitraum gab es die Deutsche Demokratische Republik (DDR)?

Explanation

The German Democratic Republic (GDR) was established in 1949 and existed until the reunification of Germany in 1990. It was a socialist state that emerged from the Soviet occupation zone after World War II and played a significant role during the Cold War. Therefore, the period from 1949 to 1990 marks the political and social development of the GDR and the challenges that led to reunification.