In 1854 Frederick Augustus II's brother, King John of Saxony, succeeded to the throne. A scholar, King John translated Dante. King John followed a federalistic and pro-Austrian policy throughout the early 1860s until the outbreak of the Austro-Prussian War. During that war, Prussian troops overran Saxony without resistance and then invaded Austrian (today's Czech) Bohemia. After the war, Saxony was forced to pay an indemnity and to join the North German Confederation in 1867. Under the terms of the North German Confederation, Prussia took over control of the Saxon postal system, railroads, military and foreign affairs. In the Franco-Prussian War of 1870, Saxon troops fought together with Prussian and other German troops against France. In 1871, Saxony joined the newly formed German Empire.
After King Frederick Augustus III of Saxony abdicated on 13 November 1918, Saxony, remaining a constituent state of Germany (Weimar Republic), became the Free State of Saxony under a new constitution enacted on 1 November 1920. (Source: Wikipedia)