Economy of Dresden flights are offered to Frankfurt, Munich, Düsseldorf, Vienna and Moscow. Furthermore, there are a lot of touristic flights especially to the Mediterranean Regions. There is a larger inner harbour in Dresden. The river Elbe waterway connects Dresden with the Hamburg Harbour and Prague. The Midland Canal offers an indirect connection to the Duisport (Duisburg harbour). Dresden is connected by some longer Bundesautobahns: The A 4 to Frankfurt and Cologne, the A 14 is running to Leipzig and Hannover, the A 13 is running to Berlin and the A 17 is running to Prague. The socialist enterprises had been inefficient already
Accession of Hamburg to the German Customs Union (Zollverein) by Hamburg. Thus Hamburg consumers had lower prices than consumers within the union. The German imperial constitution of 1871 brought no change in the legal situation of Hamburg and Bremen. Article 34 (and related provisions) went into the new constitution. After Hamburg had agreed to the constitution of the North German Federation, negotiations were held between November 1867 and March 1868 on the size of the free area. It was agreed that this would cover the Hamburg urban area, but not the outlying areas, including Ritzebuttel, Bergedorf and the Vierland (which were a condominium with Lübeck until January 1868), Waldvörfer,