These regions were combined to form the province Hesse-Nassau in 1868 with its capital in Kassel and redivided into two administrative regions: Kassel and Wiesbaden.
Nendest piirkondadest moodustati aastal 1868 Hessen-Nassau provints pealinnaga Kasselis ja jaotati kaheks halduspiirkonnaks: Kassel ja Wiesbaden.