The Constituent Assembly of Lithuania (Steigiamasis Seimas) was the first parliament of the independent state of Lithuania to be elected in a direct, democratic, general, secret election. The Assembly assumed its duties on 15 May 1920 and was disbanded in October 1922. Following the last Partition of the Polish-Lithuanian Commonwealth in 1795, Lithuania was annexed by and became part of the Russian Empire. On 21 September 1917, Vilnius played host to the Lithuanian Conference which resolved that, to lay the groundwork for the independent Lithuania and regulate its relations with the neighbours, a Constituent Assembly, elected under the principles of democracy by all of its residents, had to be convened in Vilnius. The resolutions of the Conference were to be implemented by an executive body: the Lithuanian Council of 20 members (to become the Council of the State of Lithuania as of 11 July 1918). It was this Council that adopted the Act of Independence on 16 February 1918, stipulating that a Constituent Assembly was to be convened as soon as possible. On 2 November 1918, the Council of the State of Lithuania passed the Fundamental Laws of the Provisional Constitution of the State of Lithuania, which said that the future form of the state of Lithuania would be determined by the Constituent Assembly. The Law on the Election of the Constituent Assembly was adopted on 30 October 1919. 1920 Lithuanian parliamentary election Lithuania was divided into 11 constituencies, of which 5 were not controlled by Lithuanians at the time. The total designated number of mandates was 229, but the Polish-controlled Vilnius region and the French-controlled Klaipėda region were barred from the elections. The constituencies under Lithuania's control were able to elect 112 representatives, one per population of 15,000. Every citizen aged 21 and above was entitled to vote; the voting age threshold for the military was 17. The paragraph in the Provisional Constitution stating that the Constituent Assembly would gather in Vilnius was amended.