Gustav IV Adolf or Gustav IV Adolph (1 November 1778 – 7 February 1837) was King of Sweden from 1792 until he was deposed in a coup in 1809. He was also the last Swedish monarch to be the ruler of Finland.
The occupation of Finland in 1808–09 by Russian forces was the immediate cause of Gustav Adolf's overthrow, violently initiated by officers of his own army. Following his abdication on 29 March 1809, an Instrument of Government was hastily written, which severely circumscribed the powers of the monarchy. The "Instrument" was adopted in 1809 on 6 June, the National Day of Sweden now as well as in his time. It remained in force until replaced in 1974. The crown, now with strictly limited powers, passed to Gustav Adolf's uncle Charles XIII.
HistoryLayer draws the world as it was in any year from 123,000 BCE to
2026. Move the slider and the borders redraw for that year; the map
carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each
one readable in place. Signing in is optional and lets you keep what
you find.