Explaining why the unification of germany into one country (combining east and west germany) proved to be more of a burden to the german people than expected.

"The East German and West German economies at the time of unification looked very similar. They both concentrated on industrial production, especially machine tools, chemicals, automobiles, and precision manufactures. Both had a well-trained labor force and an important export component, although their exports went largely in opposite directions. But the East German economy was highly centralized and guided by a detailed and purportedly precise planning system, with virtually no private property and with no room for decision or initiative".

"On July 1, 1990, the economies of the two Germanys became one. It was the first time in history that a capitalist and a socialist economy had suddenly become one, and there were no precise guidelines on how it could be done. Instead, there were a number of problems, of which the most severe were the comparatively poor productivity of the former East German economy and its links to the collapsing socialist economies of the Soviet Union and Eastern Europe".
-German culture