The treaty that marked the official end of the Napoleonic Wars was the Congress of Vienna in 1815. Held in Vienna, Austria, this diplomatic congress sought to restore stability and order to Europe after the upheaval caused by the Napoleonic Wars. The major powers, including Britain, Austria, Prussia, and Russia, negotiated to redraw the map of Europe and achieve a balance of power that would prevent conflicts. The Congress also aimed to suppress the spread of revolutionary ideas by restoring monarchies. Its decisions had long-lasting implications, shaping European politics and alliances well into the 19th century.