3rd January » Austria, the United Kingdom, and France form a secret defensive alliance against Prussia and Russia.
8th January » War of 1812: Battle of New Orleans Andrew Jackson leads United States or American forces in victory over the British.
13th January » War of 1812: British Empire called British troops capture Battle of Fort Peter or Fort Peter in St. Marys, Georgia, the only battle of the war to take place in the state.
15th January » War of 1812: American frigate USS President 1800 6, commanded by Commodore (rank) Commodore Stephen Decatur, is Capture of USS President captured by a squadron of four British frigates.
6th February » New Jersey grants the first American railroad charter to John Stevens (inventor) e.g John Stevens.
26th February » Napoleon I of France named Napoleon Bonaparte escapes from Elba.
1st March » Napoleon I of France or Napoleon returns to France from his banishment on Elba.
2nd March » Signing of the Kandyan Convention treaty by United Kingdom of Great Britain and Ireland named British invaders and the List of Sri Lankan monarchs or King of Sri Lanka.
16th March » William I of the Netherlands or Prince Willem proclaims himself King of the United Kingdom of the Netherlands, the first constitutional monarchy named constitutional monarch in the Netherlands.
20th March » After escaping from Elba, Napoleon I of France called Napoleon enters Paris with a regular army of 140,000 and a volunteer force of around 200,000, beginning his "Hundred Days" rule.
30th March » Joachim Murat issues the Rimini Proclamation which would later inspire Italian Unification.
23rd April » Second Serbian Uprising named 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.
3rd May » Neapolitan War: Joachim Murat, King of Kingdom of Naples or Naples is defeated by the Austrians at the Battle of Tolentino, the decisive engagement of the war.
30th May » The East Indiaman 'Arniston (East Indiaman) or Arniston' is wrecked during a storm at Waenhuiskrans, near Cape Agulhas, in present-day South Africa, with the loss of 372 lives.
1st June » Napoleon I named Napoleon promulgates a revised Charter of 1815 called Constitution after it passes a plebiscite.
9th June » End of the Congress of Vienna: the new European political situation is set.
16th June » Battle of Ligny and Battle of Quatre Bras, two days before the Battle of Waterloo.
18th June » Napoleonic Wars: The Battle of Waterloo results in the defeat of Napoleon I of France called Napoleon Bonaparte by the Duke of Wellington and Gebhard Leberecht von Blücher forcing him to abdicate the throne of Kingdom of France The Napoleonic Era e.g Fran
9th July » Charles Maurice de Talleyrand-Périgord becomes the first Prime Minister of France.
15th July » Napoleonic Wars: Napoleon Bonaparte surrenders aboard HMS Bellerophon 1786 6.
24th August » The modern Constitution of the Netherlands is signed.
15th October » Napoleon I of France begins his exile on Saint Helena in the Atlantic Ocean.
27th November » Adoption of Constitution of the Kingdom of Poland.
11th December » The United States Senate e.g U.S. Senate creates a select committee on finance and a uniform national currency, predecessor of the United States Senate Committee on Finance.
25th December » The Handel and Haydn Society, oldest continuously performing arts organization in the United States, gives its first performance.