Who invaded Poland during John Casimir's reign, causing him to flee?
Charles X Gustav of Sweden
George II Rakoczy
Tsar Alexis I of Russia
Philip IV of Spain
Answer
The Swedish invasion of Poland during John Casimir's reign was initiated by Charles X Gustav of Sweden, who seized control of large parts of the Polish-Lithuanian Commonwealth in the mid-17th century. This conflict, known as the Deluge, resulted in the occupation of Warsaw and Kraków and forced King John II Casimir to seek refuge in Silesia.
Reigning Supreme: The Legacy of John II Casimir Vasa
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