context: After the death of Juhana III in 1592, the throne was lost. There were two candidates for succession: Sigismund and Duke Charles. The question of kingship was also intertwined with church politics: during the Reformation in Europe, Sigismund was Catholic, which made his position more problematic in Lutheran Sweden. In 1593 Sigismund arrived in the country to be crowned. He gave his sovereign assurance in the autumn of next year. He also approved the Lutheran line of the Uppsala Council of Orders and Churches (1593). With the coronation of Sigismund, a personal union lasting several years was created between Sweden and Poland; Sigismund was king of Poland until 1632.
question: Who ruled Sweden at the time of the Reformation?
answers.text: Sigismund