Bremen, Georgia does not exist in the world of 1856. But a German Bremen does.
The adjacent Duchy of Bremen, which excluded the German city of Bremen itself, passed to the Electorate of Hanover (or Brunswick-Lüneburg) in 1719. George II, the king of Great Britain after whom Georgia is named, was born and lived in Hanover until age 30, when his father, Britain's George I, inherited the throne of Great Britain in 1714. Unlike his father, George II learned to speak English, albeit with an accent. The last British monarch to fight on the battlefield, George II was grandfather to his successor, George III, the king who would lose the thirteen colonies which founded the United States. Under the Constitution, the successful rebels would create an Electoral College to chose the leader of their republic which paralleled the Electoral College in the Diet of the Holy Roman Empire of which the Hanoverian British kings were electors. They would also use many Roman symbols, like the fasces. Except during Napoleon's rule, the British monarch would hold personal title to Hanover until 1837; Queen Victoria could not inherit it on account of her sex.