Riksdag of the Estates was the name used for the Estates of Sweden when they were assembled. Until its dissolution in 1866, the institution was the highest authority in Sweden next to the King. It was a Diet made up of the Four Estates, which historically were the lines of division in Swedish society:Nobility
Clergy
Burghers
Peasants
The House of Nobility, seat of the Swedish nobility.
Sweden, formally the Kingdom of Sweden, is a Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, Finland to the east, and is connected to Denmark in the southwest by a bridge–tunnel across the Öresund.
A Vendel-era helmet, at the Swedish Museum of National Antiquities
The Tjängvide image stone dating from 800 to 1099, example of Viking art
Gustav I liberated Sweden from Christian II of Denmark, ending the Kalmar Union. He established the House of Vasa which ruled Sweden and Poland until the 17th century.
Gustavus Adolphus at the Battle of Breitenfeld in 1631