Tetracameralism (Greek tetra, four + Latin camera, chamber) is the practice of having four legislative or parliamentary chambers. It is contrasted to unicameralism and bicameralism, which are far more common, and tricameralism, which is rarely used in government. Unicameralism is the practice of having only one legislative or Parliamentary chamber In Government, bicameralism (bi + Latin la ''camera'' chamber is the practice of having two legislative or Parliamentary chambers Thus a bicameral Tricameralism is the practice of having three legislative or Parliamentary chambers
Medieval Scandinavian deliberative assemblies were traditionally tetracameral, with four estates; the nobility, the clergy, the burghers and the peasants. A deliberative assembly is an Organization, comprising of members that uses Parliamentary procedure for making decisions The Swedish and Finnish Riksdag of the Estates maintained this tradition the longest, having four separate legislative bodies. The Riksdag of the Estates, or Ståndsriksdagen, was the name used for the Estates of the Swedish realm, or Rikets ständer, when they were assembled
Finland, as a part of Imperial Russia had tetracameral system until 1906, when it was followed by the then most modern legislature, the unicameral Parliament, with universal suffrage. The Russian Empire ( Pre-reform Russian: Pоссійская Имперія Modern Russian: Российская Империя translit: Rossiyskaya The Diet of Finland ( Finnish Suomen maapäivät, later valtiopäivät; Swedish Finlands Lantdagar) was the legislative The Eduskunta (in Finnish) or the Riksdag (in Swedish) is the Parliament of Finland. Universal suffrage (also universal adult suffrage, general suffrage or common suffrage) consists of the extension of the right to vote to