The Seven Years' War (1756–1763) was a global conflict involving most of the European great powers, fought primarily in Europe and the Americas. One of the opposing alliances was led by Great Britain and Prussia. The other alliance was led by France, backed by Spain, Saxony, Sweden, and Russia. Related conflicts include the 1754 to 1763 French and Indian War, and 1762 to 1763 Anglo-Spanish War.

A world war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World War I (1914–1918) and World War II (1939–1945), although some historians have also characterised other global conflicts as world wars, such as the Nine Years' War, the War of the Spanish Succession, the Seven Years' War, the French Revolutionary and Napoleonic Wars, the Cold War, and the War on Terror.