Swedish Parliament Act of 1810 Swedish Parliament Act of 1810 The 1810 Riksdag Act was passed by Parliament on 10 February 1810 during the reign of Charles XIII. It replaced the order of the estates meetings in 1617 reintroduced by Gustav III via the Union and Security Act instead of the Riksdag Act 1723. The 1810 parliamentary regime was adopted after Sweden lost Finland and Gustav IV Adolf was pushed aside in a coup. Charles XIII was subsequently appointed regent and then king, and after that a new form of government, the Government of 1809, was adopted. A notice of parliament which adopted the parliamentary
Riksdag of the Estates provinces to the Russian Empire. Comprising much of present-day Finland, these became a Grand Duchy under the Emperor, but the political institutions were kept practically intact. The Finnish estates assembled in 1809 at Porvoo to confirm the change in their allegiance. This Diet of Finland followed the forms of the Swedish Riksdag, being the legislative body of the new autonomous region. However, during the reigns of Alexander I and Nicholas I it was not assembled and no new legislation was enacted. The diet was next assembled by tsar Alexander II in 1863, due to the need to modernize the laws.