German unification came as a surprise. Nobody in West Germany had expected the collapse of the German Democratic Republic so soon. What were the causes of the breakdown of the Communist system in East Germany? How did the Federal Republic and the Four Powers react when unification first became possible, then inevitable? Was there an alternative to the currency union? How does German unification affect the European Community and the international system? These are some of the fundamental questions examined in this volume by the distinguished German political scientists.