On 1 January 2005 , Lower Saxony disbanded its remaining four `` Regierungsbezirke '' : Brunswick , Hanover , Lüneburg , and Weser-Ems .
On January 1 , 2005 , Lower Saxony disbanded its four `` Regierungsbezirke '' : Braunschweig , Hanover , Lüneburg , and Weser-Ems .