The significance of the Battle of Waterloo in 1815 lies in its role in ending the Napoleonic Wars and marking the definitive defeat of Napoleon Bonaparte. This pivotal battle took place near Waterloo, Belgium, where a coalition of British and Prussian forces faced Napoleon's army. The defeat forced Napoleon into exile on the island of Saint Helena, ending his rule and the threat he posed to Europe. The battle had lasting impacts on European politics, leading to a balance of power that influenced international relations for decades. It also set the stage for the Congress of Vienna, which aimed to maintain peace and stability in Europe.