Union of Vilnius

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Union of Vilnius

Polish history

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concluded by Sigismund II Augustus

In Sigismund II Augustus
…Sigismund II Augustus concluded the Union of Wilno (Vilnius) in 1561: thereby the Livonian lands, north of the Dvina (Daugava) River, were incorporated directly into Lithuania, while Courland, south of the Dvina, became a secular duchy and Polish fief.
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