Frederiks Kog was formerly part of the German Empire. In the German Empire, the place was called Friedrichenkoog.
The place is now called NN and belongs to Denmark.
Historical place name | Country | Administration | Time |
---|---|---|---|
Friedrichenkoog | German Empire | Tondern | before the Versailles Treaty |
Frederiks Kog | Denmark | Tønder | after the Versailles Treaty |
NN | Denmark | Sønderjylland | 1993 |