He issued a Pragmatic Sanction that effectively unified all the parts of the (*) Low Countries, and he abdicated a year after the 'cuius regio eius religio' principle was established in his holdings via the Peace of Augsburg.
Early in his rule this man faced an uprising sparked by widespread mistrust of his Flemish background, and this man's troops decisively defeated those rebels at the Battle of Villalar. A group led by Philip I of Hesse and Elector Johan Frederick I opposed this man, but lost to his armies at the Battle of Muhlberg. He issued a Pragmatic Sanction that effectively unified all the parts of the (*) Low Countries, and he abdicated a year after the 'cuius regio eius religio' principle was established in his holdings via the Peace of Augsburg. This ruler bankrolled Magellan's expedition to circumnavigate the earth. For 10 points, identify this man who ruled Spain and the Holy Roman empire for much of the first half of the 16th century, and was the father of Philip II.
Early in his rule this man faced an uprising sparked by widespread mistrust of his Flemish background, and this man's troops decisively defeated those rebels at the Battle of Villalar.
Holy Roman Emperor Charles V [accept Charles I of Spain; accept Carlos I; prompt on "Charles" or "Carlos"]