Complex sentence: The Duchy was abandoned by the bishops during the Silesian Wars, and in 1810 it was secularized by victorious Prussia, its autonomy removed and it was incorporated into Prussian administrative structure.
Split into simpler sentences: The duchy was abandoned by the bishops during the Silesian Wars and annexed by the Kingdom of Prussia. In 1810 it was secularized by Prussia, its autonomy removed and it was incorporated into the Prussian administrative structure.