德意志统一
Unification with Prussia took center stage from 1866. In the Austro-Prussian War, which began in August, Ludwig supported Austria against Prussia. Austria and Bavaria were defeated, and Bavaria was forced to sign a mutual defense treaty with Prussia. When the Franco-Prussian War broke out in 1870, Bavaria was required to fight alongside Prussia. After the Prussian victory over France, Bismarck moved to complete the Unification of Germany.