Both Charles X of Sweden and Frederick…
January 1656 CE
Both Charles X of Sweden and Frederick William, Elector of Brandenburg, agree to establish an alliance against Poland under the terms of the Treaty of Königsberg, signed in Königsberg (Królewiec) on January 17, 1656.
Charles is responsible for forcing the prince-elector to become his ally and vassal.
People
Groups
Brandenburg, (Hohenzollern) Margravate of
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Cossacks, Zaporozhian
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Sweden, (second) Kingdom of
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Denmark-Norway, Kingdom of
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Russia, Tsardom of
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Prussia, Royal (Polish province)
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Polish-Lithuanian Commonwealth (Commonwealth of the Two Nations)
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Netherlands, United Provinces of the (Dutch Republic)
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Brandenburg-Prussia
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