Prussia (Swedish Vassal)

This article is about the specific polity Prussia (Swedish Vassal) and therefore only includes events related to its territory and not to its possessions or colonies. If you are interested in the possession, this is the link to the article about the nation which includes all possessions as well as all the different incarnations of the nation.

If you are looking for the page with the statistics about this polity you can find it here:All Statistics

During the Second Northern War, Frederick William I, Elector of Brandenburg and Duke of Prussia, was forced to became a Swedish vassal for the Duchy of Prussia and Ermland.

Establishment

January 1656: In 1656, during the Second Northern War, the "Great Elector" of Brandenburg, Frederick William, was forced to join the Swedish camp and became a Swedish vassal for the Duchy of Prussia and Ermland. This decision was a strategic move to protect his territories from Polish and Russian threats.

Chronology

Interactive Chronologies with maps are available in the section Changes Navigation

1. Northern Wars

A series of wars fought in northern and northeastern Europe from the 16th to the 18th century.

1.1.Second Northern War

Was a war between the Polish-Lithuanian Commonwealth and Sweden (along with their respective allies) over the hegemony in the Baltic Sea.

November 1656: The Treaty of Labiau was a treaty signed between Frederick William I, Elector of Brandenburg and Charles X Gustav of Sweden. With several concessions, the most important being the elevation of Frederick William I from a Swedish vassal to a full sovereign in the Duchy of Prussia and in Ermland (Ermeland, Warmia).