Government of Austria commencement of the Austria Constitution on 10 November 1920 became first Federal Chancellor of Austria. Mayr and his successors proceeded with the support of the Christian Social Party and the Greater German nationalists, while the Social Democrats remained in opposition. From 5 March 1933 onwards, the Christian Social chancellor Engelbert Dollfuß continued to rule by suppressing the National Council parliament. In the course of the Austrian Civil War he brought down the opposition, and on 1 May 1934 implemented the authoritarian Federal State of Austria. All political parties were banned, except for the Fatherland's Front supporting Dollfuß' Austrofascist government. The
Christian Social Party (Austria) strongest party after the Social Democrats. With its support the assembly enacted the Habsburg Law concerning the expulsion and the takeover of the assets of the House Habsburg-Lorraine. On 10 September 1919, Chancellor Karl Renner had to sign the Treaty of Saint-Germain, which prohibited any affiliation with Germany. It was ratified by the assembly on 21 October. However, the next year the coalition broke up and Renner resigned on 11 July 1920, succeeded by the Christian Social politician Michael Mayr. Both parties agreed on scheduling new elections and the national assembly dissolved after it had passed the Constitution of Austria