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Polish-Swedish Wars
The Polish-Swedish wars were a series of wars between the Polish–Lithuanian Commonwealth and Sweden: Livonian War, War against Sigismund, Polish–Swedish War of 1600–11, Polish–Swedish War of 1620–25, Polish–Swedish War of 1626–29, The Deluge, The Northern Wars, The Great Northern War.
Swedish invaders of the Christian 'Church of Sweden' denomination
completely destroyed Warsaw, the capital of the Polish–Lithuanian Commonwealth, as well as, 188 cities and towns, 81 castles, and 136 churches in Poland.
1M deaths (1,000,000?)
Christianity
1563-1721
Poland/Sweden