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About Duchy of Courland and Semigallia
The Duchy of Courland and Semigallia was a duchy in the Baltic region, then known as Livonia, that existed from 1561 to 1569 as a nominal vassal state of the Grand Duchy of Lithuania and subsequently made part of the Crown of the Polish Kingdom from 1569 to 1726 and incorporated into the Polish–Lithuanian Commonwealth in 1726. On 24 October 1795, it was annexed by the Russian Empire in the Third Partition of Poland.
Everything about Duchy of Courland and Semigallia →- Inception
- 1561