Circa 1618 – Administrative reform: Oxenstierna reorganizes theKammarkollegiet into a multi-departmental institution, a model for modern Swedish bureaucracy.
Autumn – Polish–Swedish War armistice: Truce ends this phase of thePolish–Swedish War (1600–1629), halting conflict over Livonia and Estonia.[1]
Reprinting ofStadslagen: The old town law is reaffirmed as municipal legal code, remaining in effect until 1734.[2]
4 November – Sara Simonsdotter brothel scandal: Police raid a brothel on Kindstugatan operated by "Tjocka Sara", revealing a network involving clergy and nobles. Consequences include:
a failed prison escape aided by soldiers,
public fines for elite clients,
Simonsdotter’s public whipping in May 1619,
her deportation to Finland,
and execution of two prostitutes on 7 June 1619.
May – Thirty Years’ War begins: Sweden observes the outbreak of the Bohemian Revolt. Although neutral, Gustavus Adolphus begins positioning the kingdom for later involvement.[3]