Seven Years' War

The Seven Years' War, 1756 to 1763, was a global war fought by numerous great powers, primarily in Europe, with significant subsidiary campaigns in North America and the Indian subcontinent. The primary warring states were Great Britain and Prussia fighting against France and Austria, with other countries joining these coalitions: Portugal, Spain, Sweden, and Russia, plus Saxony and many other minor states of the Holy Roman Empire. Related conflicts include the Third Silesian War, French and Indian War, Third Carnatic War, Anglo-Spanish War (1762–1763), and Spanish–Portuguese War. Although the War of the Austrian Succession ended with the Treaty of Aix-la-Chapelle (1748), none of the signatories were happy with the terms, and it was generally viewed as a temporary armistice. It led to a strategic realignment known as the Diplomatic Revolution that ended the long-running rivalry between Austria and France. The two declared war on Britain after signing the Treaty of Versailles in 1756, with a second agreement in 1757 bringing Prussia into the war on the side of Britain. Spain became a French ally in 1762, unsuccessfully invading Portugal, and losing Havana and Manila to Britain. Although these were returned under the Treaty of Paris in 1763, France lost its possessions in North America, while Britain established its commercial dominance in India. The conflict in Europe centred on Austrian attempts to recover Silesia, and ended with the Treaty of Hubertusburg in 1763. This confirmed Prussian occupation of Silesia and its status as a great power, challenging Austria for dominance within Germany and altering the European balance of power.