"East Germany, apparently the most successful Communist regime, although with its economy wrecked by ideological mismanagement, was on the edge of bankruptcy in the autumn of 1989. It had only been able to continue that long thanks to large loans from the West, notably West Germany. As a sign of good relations, Erich Honecker paid an official visit to West Germany in 1987. However, the East German government could no longer finance its social programmes. Gorbachev’s glasnost and perestroika, to which Honecker reacted critically, intensified the regime’s loss of legitimacy and, by September, East German society was dissolving as people, especially the younger generation, left in large numbers. Hungary’s opening of its Austrian border on 2 May had permitted substantial numbers of East Germans to leave for West Germany via Hungary and Austria. They abandoned not only economic failure but also the lack of modern civilisation in the shape of free expression, tolerance, opportunity and cultural vitality. Hungary refused to heed pressure from East Germany to stem the tide of departures, and Gorbachev was unwilling to help. In the first nine months of the year, 110,000 East Germans resettled in West Germany."
January 1, 1970
https://en.wikiquote.org/wiki/German_reunification