English: Map showing the territory of the Free imperial city of Bremen in 1798. The walled city of Bremen is the reddish-brown area near the center of the map. This very accurate map, designed by Christian Abraham Heineken in 1798, is based on a trigonometric survey. Heineken reissued a new version of this map in 1806 in order to take into account the territorial enlargment of Bremen following the German mediatization of 1803.
Translation of the title "Map of the territory of the Free and Hanseatic city of Bremen, including the villages whose sovereignty was ceded, with the exception of some juridictional rights, to the Electorate of Brunswick in 1741". Bremen long had to fight for its freedom, first against the Swedes, then against the Danes and finally against the Electorate of Brunswick-Lüneburg (or Electorate of Hanover), which was heir to the Swedish rights in the Duchy of Bremen. A final settlement was concluded in 1741 when Bremen's full sovereignty was recongnized in exchange for ceding some territory to Hanover. (information taken from Bremens Weg in die Selbständigkeit: ein historischer Abriss, Stattsarchiv Bremen).