WHAT HAPPENED IN 1815.
Look what happened the 1815.

Austria, the United Kingdom, and France form a secret defensive alliance against Prussia and Russia. (3. January 1815)

War of 1812: Battle of New Orleans – Andrew Jackson leads American forces in victory over the British. (8. January 1815)

War of 1812: British troops capture Fort Peter in St. Marys, Georgia, the only battle of the war to take place in the state. (13. January 1815)

War of 1812: American frigate USS President, commanded by Commodore Stephen Decatur, is captured by a squadron of four British frigates. (15. January 1815)

New Jersey grants the first American railroad charter to John Stevens. (6. February 1815)

Napoleon Bonaparte escapes from Elba. (26. February 1815)

Napoleon returns to France from his banishment on Elba. (1. March 1815)

Signing of the Kandyan Convention treaty by British invaders and the King of Sri Lanka. (2. March 1815)

Prince Willem proclaims himself King of the United Kingdom of the Netherlands, the first constitutional monarch in the Netherlands. (16. March 1815)

After escaping from Elba, Napoleon enters Paris with a regular army of 140,000 and a volunteer force of around 200,000, beginning his "Hundred Days" rule. (20. March 1815)

The Mount Tambora volcano begins a three-month-long eruption, lasting until July 15. The eruption ultimately kills 71,000 people and affects Earth's climate for the next two years. (10. April 1815)

The Second Serbian Uprising: a second phase of the national revolution of the Serbs against the Ottoman Empire, erupts shortly after the annexation of the country to the Ottoman Empire. (23. April 1815)

The East Indiaman Arniston is wrecked during a storm at Waenhuiskrans, near Cape Agulhas, in present-day South Africa, with the loss of 372 lives. (30. May 1815)

Napoleon swears fidelity to the Constitution of France. (1. June 1815)

End of the Congress of Vienna: the new European political situation is set. (9. June 1815)

Battle of Ligny and Battle of Quatre Bras, two days before the Battle of Waterloo. (16. June 1815)

Napoleonic Wars: The Battle of Waterloo results in the defeat of Napoleon Bonaparte by the Duke of Wellington and Gebhard Leberecht von Blücher forcing him to abdicate the throne of France for the second and last time. (18. June 1815)

Charles Maurice de Talleyrand-Périgord becomes the first Prime Minister of France. (9. July 1815)

Napoleonic Wars: Napoleon Bonaparte surrenders aboard HMS Bellerophon. (15. July 1815)

The modern Constitution of the Netherlands is signed. (24. August 1815)