The Dutch Golden Age,  was a period in Dutch history, roughly spanning the 17th century, in which Dutch trade, science, military, and art were among the most acclaimed in the world. The first half is characterized by the Eighty Years' War till 1648. The Golden Age went on in peace time during the Dutch Republic until the end of the centuryIn 1568, the Seven Provinces that later signed the Union of Utrecht (Dutch: Unie van Utrecht) started a rebellion against Philip II of Spain that led to the Eighty Years' War. Before the Low Countries could be completely reconquered, a war between England and Spain (the Anglo-Spanish War (1585–1604)) broke out, forcing Spanish troops to halt their advances and leaving them in control of the important trading cities of Bruges and Ghent, but without control of Antwerp, which was then arguably the most important port in the world. After a siege, on August 17, 1585 Antwerp fell, and the division of the Northern and Southern Netherlands (mostly modern Belgium) was defined. The United Provinces (roughly today's Netherlands) fought on until the Twelve Years' Truce, which did not end the hostilities. The Peace of Westphalia in 1648, which ended the Thirty Years' War, brought the Dutch Republic formal recognition and independence from the Spanish crown.