1815

The year 1815 is most famous for the Battle of Waterloo, where European allies defeated Napoleon Bonaparte, ending his rule and his millennia of influence. This event marked a significant shift in European politics, leading to a period of relative peace and stability known as the Concert of Europe. Additionally, 1815 saw the eruption of Mount Tambora in Indonesia, which caused one of the most powerful volcanic eruptions in recorded history, leading to global climate anomalies and the "Year Without a Summer." These events had lasting impacts on geopolitics, climate, and society across the world.