Complex sentence: In 1482 he had Louis of Bourbon, Bishop of Liège, assassinated and replaced by his own son John of Hornes, which lead to a civil war in the prince-bishopric.
Split into simpler sentences: In 1482 he had Louis of Bourbon, Bishop of Liège, assassinated and replaced by his own son John of Hornes. This leads to a civil war in the prince-bishopric.