Germany was reunited peacefully in 1990, a year after the fall and collapse of the GDR's Communist regime and the opening of the iron curtain that separated German families by the barrel of a gun for decades. The re-established eastern states joined the Federal Republic of Germany on the 3rd of October 1990, a day which is since celebrated as the national holiday, German Unification Day (Tag der Deutschen Einheit). Together with the reunification, the last post-war limitations to Germany's sovereignty were removed and the US, UK, France and most importantly, the Soviet Union gave their approval. The German parliament, the Bundestag, after much controversial debate, finally agreed to comply with the eastern border of the former GDR, also known as the "Oder-Neisse-Line", thus shaping FRG the way it can be found on Europe's map today.
