Here is an answer to the question of the Kingdom of Hannover, taken from the
Encyclop�dia Britannica, Inc
George V (1819-78), blind from the age of 14, became king on his father's
death in 1851. The rise of Prussia undid his kingdom: he tried to remain
neutral in the Seven Weeks' War in 1866 between Austria and Prussia but was
driven from Hanover by Prussian forces. The kingdom was then annexed by
Prussia (Sept. 20, 1866) and accorded limited self-government. The German
Hanoverian party continued to demand a separate status for Hanover in the
Reichstag throughout the period of the German Empire (1871-1918), but
Hanover remained part of Prussia until 1945.
Hanover was briefly re-established as a state in August 1946, but on
November 1 of that year it was united with Oldenburg, Brunswick, and
Schaumburg-Lippe to form the Land (state) of Lower Saxony (Niedersachsen).
The name Hannover now applies to a district within that state.
Rena