North German Confederation – Flag in Lexicon and Shop https://www.flaggenlexikon.de/fdtlhndb_me.htm
North German Confederation, that was the name of the loose monarchical confederation of German states, which existed between 1866 and 1871, with the King of Prussia on the top. Its flag – which can also be ordered on this page – showed the colors black, white and red.
The Prussian premier Otto von Bismarck was ambitioned