In addition to holding the Austrian hereditary lands, the Habsburg dynasty ruled the Low Countries (1482-1794), Spain (1504–1700) and the Holy Roman Empire (1438–1806). All these lands were notably in personal union under Emperor Charles V and formed the "Habsburg ring" around France. As the House of Habsburg expanded into western Europe, border friction began with the Kingdom of France. The subsequent rivalry between the two powers became a cause for several conflicts. These include the Anglo-French Wars (1066-1815), the Italian Wars (1494–1559), the Thirty Years' War (1618–1648), the Nine Years' War (1688–1697), the War of Spanish Succession (1700-1713), the War of Polish Succession (1733-1736) the War of Austrian Succession (1740-1748), the Seven Years' War (1756-1763), the American Revolutionary War (1778-1783), the Coalition Wars (1792-1815), the Revolutions of 1830 (1830), the Revolutions of 1848 (1848-1849), the Franco-Austrian War (1859), the Wars of German Unification (1864-1871) and World War I (1914-1918).