Electorate of Brunswick-Lüneburg
In 1692 the Duke of Hanover was made an Elector of the Holy Roman Emperor. After then the Dukes were usually called Electors of Hanover, German: Kurfürst von Hannover.
Queen Anne of England and Great Britain had no children, Sophia-Dorothea was chosen as her protestant heir. When Anne died in 1714, Sophia Dorothea's son the Elector of Hanover became King George I of Great Britain.
Electorate Of Brunswick-Lüneburg Media
Sketch map of the Duchy of Brunswick-Lüneburg including the Hanover electorate (blue) and the Principality of Brunswick-Wolfenbüttel (green), c. 1720: Elector George I Louis acquired Saxe-Lauenburg and Bremen-Verden, his successor George II Augustus gained Land Hadeln (1731,not shown on the map) and George III acquired the Prince-Bishopric of Osnabrück (1803)
Civil ensign of Hanover (1727–1801).