Since the reign of Charlemagne, this country is divided into High and Low Germany... the provinces of Lower Germany towards the north conſiſt of the Low Country of the Rhine, Triers, Cologn, Mentz, Weſtphalia, Heſſe, Brunſwic, Miſnia, Luſatia, High Saxony upon the Elbe, Low Saxony upon the Elbe, Mecklenburg, Lauenburg, Brandenburg, Magdeburg, and Pomerania.
Source: wiktionary