Example image of eyePlorer eyePlorer map for 'Union of Arras': 1579 Arras Belgium France January 6 John of Austria Low Countries Nord-Pas-de-Calais Philip II of Spain Picardy (province) Wallonia Union of Utrecht Charles V, Holy Roman Emperor Council of State Dutch Revolt Catholicism Calvinism Douai Duchy of Limburg Lille Luxembourg Orchies Walloon Flanders Alexander Farnese, Duke of Parma List of Dukes of Parma Romance Flanders Artois Act of Abjuration Union of Brussels Dutch–Portuguese War Treaty of Arras History of Belgium before 1830 Southern Netherlands Flanders History of Belgium Pacification of Ghent Jean Victor de Constant Rebecque William the Silent Habsburg Spain 16th century Spanish Empire European wars of religion Eighty Years' War