The opening of the Berlin wall on 9th of November 1989 could not have been foreseen. Although people of DDR claimed democracy and reforms. The German sources show that clearly. The enthusiasm of the people in the streets, the diffrent problems in the DDR, the politicians, who worked for the new democratic order of Germany in Europe and a unification of BRD and DDR created a peaceful solution after World War II and Cold War. It was not a Re-unification, because this kind of Germany never existed before. It is still a work in progress and a challenge for Germany and Europe.