In 1864, the first two were merged into the "Region of the Duchies of Bremen and Verden" (Landschaft der Herzogtümer Bremen und Verden) by a Hanoverian act and their area of responsibility redefined.
Aastal 1864 ühendati esimesed kaks Hannoveri aktiga "Bremeni ja Verdeni hertsogkondade piirkonda" (Landschaft der Herzogtümer Bremen und Verden) ja nende ala defineeriti vastavalt ümber.