Ostfriesisch
(East Frisian) and Middle Low German. East Frisian was spoken in the "Ommelanden" (surrounding lands of the city of Groningen), while the city, the surrounding rural area called and the eastern lordship of Westerwolde were Low Saxon. When the city of Groningen developed an important position in the Ommelanden, a switch from East Frisian to Saxon occurred, although it was not a complete switch because there are many East Frisian influences in the "new" Groningen language. Many East Frisian words and grammatic features are still in use today. In less than one century, the same process also started in East Frisia, from the city of Emden, which was influenced by the Hanseatic League. This explains the strong relation between both varieties.