Busk Land (Polish: ziemia buska), named after the town of Busk (now Ukraine), was an administrative unit (ziemia) of both the Kingdom of Poland and the Polish-Lithuanian Commonwealth. It was part of Belz Voivodeship, and existed from the 15th century until the Partitions of Poland, when its territory was annexed by the Habsburg Empire (1772).
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Busk Land Wikipedia(Text) CC BY-SA