Complex sentence: In the Union of Lublin, Pomerelia became reorganized in the Pomeranian Voivodeship until the 1772 and 1793 Partition of Poland, when it became part of the Prussian province of West Prussia.
Split into simpler sentences: In the Union of Lublin, Pomerelia became reorganized in the Pomeranian Voivodeship. In 1772 and 1793 Partition of Poland, it was annexed by Kingdom of Prussia, which created out of the conquered territories province of West Prussia.