of Westphalia (1648) secured universal acceptance of Germany's political and religious fragmentation, but the Regency of Anne of Austria and her minister Cardinal Mazarin experienced a civil uprising known as the Fronde (1648–1653) which expanded into a Franco-Spanish War (1653–1659). The Treaty of the Pyrenees (1659) formalised France's seizure (1642) of the Spanish territory of Roussillon after the crushing of the ephemeral Catalan Republic and ushered a short period of peace. For most of the reign of Louis XIV (1643–1715), France was the dominant power in Europe, aided by the diplomacy of Richelieu's successor (1642–1661) Cardinal Mazarin and the economic policies (1661–1683) of Colbert. Colbert's attempts to promote economic growth and the creation of new industries were not a great success, and France did not undergo any sort of industrial revolution during Louis XIV's reign. Indeed, much of the French countryside during this period remained poor and overpopulated. The resistance of peasants to adopt the potato, according to some monarchist apologists, and other new agricultural innovations while continuing to rely on cereal crops led to repeated catastrophic famines long after they had ceased in the rest of Western Europe. Prior to Louis XIV's reign, French soldiers frequently went into battle barefoot and with no weapons. On the other hand, France's high birthrate until the 18th century proved beneficial to its rulers since it meant the country could field larger armies than its neighbors. In fact, the king's foreign policy, as well as his lavish court and construction projects, left the country in enormous debt. The Palace of Versailles was criticized as overly extravagant even while it was still under construction, but dozens of imitations were built across Europe. Renewed war (the War of Devolution 1667–1668 and the Franco-Dutch War 1672–1678) brought further territorial gains (Artois and western Flanders and the free county of Burgundy, left to the Empire in 1482), but at the cost of the increasingly concerted opposition of rival powers. French culture was part of French hegemony. In the early part of the century French painters had to go to Rome to shed their provinciality (Nicolas Poussin, Claude Lorrain), but Simon Vouet brought home the taste for a classicized baroque that would characterise the French Baroque, epitomised in the Académie de peinture et de sculpture, in the painting of Charles Le Brun and the sculpture of François Girardon. With the Palais du Luxembourg, the Château de Maisons and