States and territories disestablished in the 1550s

Dithmarschen (, ; archaic English: Ditmarsh; ; ) is a district in Schleswig-Holstein, Germany. It is bounded by (from the north and clockwise) the districts of Nordfriesland, Schleswig-Flensburg, Rendsburg-Eckernförde, and Steinburg, by the state of Lower Saxony (district of Stade, from which it is separated by the Elbe river), and by the North Sea.

Medieval prince-bishopric in Livonia

principality in the Holy Roman Empire

region of northern France controlled by England during the middle ages

small Medieval kingdom covering the Dahlak Archipelago

European polity