Free State of Anhalt
The Free State of Anhalt was formed after Joachim Ernst, Duke of Anhalt abdicated on 12 November 1918, ending the Duchy of Anhalt. It was a state of Germany during the time of the Weimar Republic. In May 1932 the Nazi Party came to power in Anhalt and, after the Nazis attained power at the federal level in 1933, Anhalt was abolished de facto by the federal Nazi government, becoming part of the Gau of Magdeburg-Anhalt.
At the end of World War II, when Germany was divided into zones of occupation, Anhalt was merged with the bulk of the Prussian Province of Saxony to form the Soviet-administered German state of Saxony-Anhalt. This state was then dissolved in 1952 but reformed in 1990 after the reunification of Germany.