Complex sentence: His excessive severity persuaded Phillip II to exchange him for Albrecht of Austria, making him governor and general-captain of Milan, where he spread fear among the Italian nobility, especially the Venetians thorough his policy and army.
Split into simpler sentences: His excessive severity persuaded Phillip II to exchange him for Albrecht of Austria. He was then made governor and general-captain of Milan, where he spread fear among the Italian nobility, especially the Venetians thorough his policy and army.