 Complete the following phrase:  After the Sack of Antwerp by Spanish mutineers on 4 November 1576, Catholics and Protestants of the Low Countries concluded the Pacification of Ghent, to remove all Spanish troops. The Spanish tercios were in fact withdrawn to Italy in April 1577, after the new Governor-General of the Spanish Netherlands, the famous Christian knight, and half-brother of Philip II of Spain, Don John of Austria victor of 