Grand Duchy of Baden

The Grand Duchy of Baden was a former monarchy in Europe. It is now part of modern Germany. The Grand Duchy of Baden (German: "Großherzogtum Baden") was a historical state in the southwest of Germany, on the east bank of the Rhine. It existed between 1806 and 1918, the capitol was the city of Karlsruhe.
Originally the grand ducal family were entitled to the style of "Highness". The heir to the throne was usually known as the Hereditary Prince with the higher style of "Royal Highness". 
The state was abolished in 1918 after the German Revolution where several monarchies ended.