In September 1919, Adolf Hitler joined the political party known as the Deutsche Arbeiterpartei – DAP (German Workers' Party). Hitler rose to power after he joined this party. This political party was formed and developed during the post World War I era. It was anti-Marxist and opposed to the democratic post-war government of the Weimar Republic and the Treaty of Versailles; and it advocated extreme nationalism and Pan-Germanism as well as virulent anti-Semitism. Hitler's ‘rise’ can be considered to have ended in March 1933, after the Reichstag adopted the Enabling Act of 1933 in that month. President Paul von Hindenburg had already appointed Hitler as Chancellor on 30 January 1933 after a series of parliamentary elections.