Flag of Germany
While the use of black-red-gold had been suggested in the Soviet zone in 1946, the Second People's Congress in 1948 decided to adopt the old black-white-red tricolour as a national flag for East Germany. This choice was based on the use of these colours by the National Committee for a Free Germany, a German anti-Nazi organisation that operated in the Soviet Union in the last two years of the war. In 1949, following a suggestion from Friedrich Ebert, Jr., the black-red-gold tricolour was instead selected as the flag of the German Democratic Republic upon the formation of this state on 7 October 1949. From 1949 to 1959, the flags of both West and East Germany were identical. On 1 October 1959, the East German government changed its flag with the addition of its coat of arms. In West Germany, these changes were seen as a deliberate attempt to divide the two Germanys. Displaying this flag in West Germany and West Berlin—where it became known as the (divider-flag)—was seen as a breach of the constitution and subsequently banned until the late 1960s.
Flag of Germany
West of the Oder–Neisse line, the German states were reorganised along the lines of the zones of occupation, and new state governments were established. Within the American zone, the northern halves of the former states of Württemberg and Baden were merged to form Württemberg-Baden in 1946. As its flag, Württemberg-Baden adopted the black-red-gold tricolour. The choice of these colours was not based on the historical use of the tricolour, but the simple addition of gold to Württemberg's colours of red and black. Coincidentally, Baden's colours were red and yellow, so the colour choice could be mistaken for a combination of the two flags. In 1952, Württemberg-Baden became part of the modern German state of Baden-Württemberg, whose flag is black and gold.