It was granted by Johann II, Prince of Liechtenstein, and established the rule of partial parliamentary democracy mixed with that of constitutional monarchy, as well as providing for referendums on decisions of the Landtag.
[1] It also abolished the three seats in the Landtag appointed by the Prince and lowered the voting age from 24 to 21.
Following the November 1918 Liechtenstein putsch, which had greatly undermined the 1862 constitution and in combination with the economic devastation created from World War I, it had created a large and significant basis of support for constitutional revision in the country.
[3][4] Primarily formed around the ideas of Wilhelm Beck, who advocated for the expansion of welfare, broader voting rights and a Liechtensteiner head of government.
The constitution was signed into law by Prince Karl Aloys on behalf of Johann II and Josef Ospelt as a government representative on 5 October 1921.