The 1772 Instrument of Government () was the constitution of the Kingdom of Sweden from 1772 to 1809. It was promulgated in the wake of the Revolution of 1772, a self-coup mounted by King Gustav III, and replaced the 1720 Instrument of Government, which had been in force for most of the Age of Liberty (1719-72). Although in theory the 1772 Instrument merely readjusted the balance of power between the Crown and the Riksdag of the Estates (Swedish Parliament), without changing Sweden's status as a constitutional monarchy, in practice it is generally seen as instituting an absolute monarchy, especially after its modification in 1789 by the Union and Security Act, which further strengthened royal power at the expense of the Riksdag. It remained in force throughout the Gustavian era, until replaced by the 1809 Instrument of Government as a result of the Coup of 1809. Background During the Age of Liberty (1719-72), Sweden was governed as a constitutional monarchy, initially under the Instrument of Government (1719) and later under the near-identical Instrument of Government (1720). Under this system, the king played a relatively minor role in the government, which was instead dominated by the Riksdag of the Estates, with most of the executive functions of government being discharged by the Council of the Realm (). The Age of Liberty is generally remembered as a golden age of political and artistic freedom, but it was also characterised by factional struggles between the so-called "Cap" and "Hat" parties in the Riksdag and by military humiliation in the Hats' War (1741-3) and the Pomeranian War (1757-62). Indeed, some historians argue that by the early 1770s the situation had deteriorated to the extent that Sweden was on the brink of anarchy. Gustav III was therefore able to attract considerable support for his scheme to overthrow the government and replace the 1720 Instrument of Government with a new constitution. On 19 August 1772 the king rallied the Stockholm garrison and arrested the Council of the Realm, along with several prominent members of the Cap party. Two days later he convened a session of the Riksdag and compelled it to accept a new constitution which he had drawn up, the 1772 Instrument of Government. Description The Instrument of Government was a somewhat curious mix of different influences. In part it was based on earlier Swedish political traditions, harking back above all to the reign of the