This region is divided by the Eider River. After Christian IX violated the protocols of the 1852 London Convention, the Treaty of Vienna ceded it to Austria and Prussia.
This region is divided by the Eider River. After Christian IX violated the protocols of the 1852 London Convention, the Treaty of Vienna ceded it to Austria and Prussia. However, Austria lost its part after the Seven Weeks War, and following World War I, the northern part of the its northern duchy voted to be reunited with its northern neighbor.  FTP, identify this region now shared by Germany and Denmark.
This region is divided by the Eider River. After Christian IX violated the protocols of the 1852 London Convention, the Treaty of Vienna ceded it to Austria and Prussia.
Schleswig-Holstein