The War of the Third Coalition (1805) was a conflict involving several European powers against the growing influence of Napoleon Bonaparte and the French Empire. Key participants included Britain, Austria, Russia, and Sweden, who formed a coalition to counter Napoleon's military ambitions following his earlier victories in Italy and against Prussia. The war culminated in the decisive Battle of Austerlitz on December 2, 1805, where Napoleon's forces defeated the combined armies of Austria and Russia. This victory solidified Napoleon's dominance in Europe and led to the dissolution of the Third Coalition, significantly altering the balance of power on the continent.