History of Sweden (1523–1611)

The early Vasa era is a period in Swedish history that lasted between 1523–1611. It began with the reconquest of Stockholm by Gustav Vasa and his men in 1523, which was triggered by the event known as the Stockholm Bloodbath in 1520, and then was followed up by Sweden's secession from the Kalmar Union, and continued with the reign of Gustav's sons Eric XIV, John III, John's son Sigismund, and finally Gustav's youngest son Charles IX. The era was followed by a period commonly referred to as the Swedish Empire, or Stormaktstiden in Swedish, which means "Era Of Great Power".

Source: Wikipedia — History of Sweden (1523–1611) (CC BY-SA 4.0)