Emperor Gia Long unified Vietnam by conquering Hanoi.
Washington, D.C. was incorporated by Congress.
The first edition of America's oldest newspaper, The New York Evening Post, was published.
The Treaty of Florence was signed, which ended the war between the French Republic and the Kingdom of Naples.
The Union Jack flag was flown for the first time in Dublin, Ireland, to commemorate the union between Great Britain and Ireland.
A plot to blow up Napoleon Bonaparte with a barrel of gunpowder failed.
The US Senate held its first session in the unfinished Capitol Building.
Paris barred women from legally wearing pants.
US President John Adams became the first president to move into the White House.
Beethoven performed his first concert 'for his benefit' at Austria's Royal Imperial Court Theatre.
Napoleon Bonaparte left Egypt to return home to France.
In Rosetta, Egypt, French troops discovered a black stone carved with two ancient Egyptian texts and one Ancient Greek text.
Napoleon stated his support of re-establishing Jerusalem for Jews.
Income tax was introduced in the UK so that prime minister William Pitt could collect funds to beat Napoleon.
Hundreds of people died after a New England Blizzard.
Blacksmith, Patrick Lyon stole $162,821 in cash and gold from a vault at the Bank of Pennsylvania.
The British Army defeated Irish rebels at the Battle of Vinegar Hill.
Napoleon took the island of Malta.
The Territory of Mississippi was formally organized.
The world's first recorded parachute jump occurred from 3,300 feet (1,000 m) above Paris.
The Treaty of Campo Formio was signed between France and Austria.
Rear-Admiral Horatio Nelson's attempt to conquest Tenerife, Spain, failed.
Napoleon formed the Ligurian Republic.
America's second president John Adams was inaugurated in Philadelphia, Pennsylvania.
The Bank of England printed the first one-pound and two-pound banknotes.
£1 notes were circulated in Britain.
Italy used its current tri-colored flag for the first time.
American abolitionist David Walker published his appeal to the African American publications in Boston.
President George Washington provided a letter of address to say he would not run for president again after 20 years of service.
David Humphreys handed out the first recorded US passport.
Tennessee became the 16th state to join the United States of America.
Edward Jenner, an English country doctor, gave the first vaccination against smallpox.
The United States received its first elephant.
German mathematician Carl Friedrich Gauss became the first person to prove quadratic reciprocity law.
German mathematician Carl Friedrich Gauss constructed the first heptadecagon using a ruler and a compass.
The Invasion of the Cape Colony came to an end. The Dutch Cape Colony surrendered to the British after three months of battling.
The University of North Carolina opened, becoming the first US public state university.
The 11th Amendment to the United States Constitution was ratified.
The Batavian Republic was proclaimed, replacing the Republic of the Seven United Netherlands.
British Navy Admiral William Brown and his crew discovered Honolulu Harbor.
The US Neutrality Act was enacted.
American inventor Eli Whitney was granted a patent for a ground-breaking new type of cotton gin.
Elizabeth Bennet became the first woman to give birth by a Cesarean section in the United States.
Mayor of Paris Jean Sylvain Bailly was guillotined at Champ de Mars during the Reign of terror.
The Festival of Reason was held at Notre Dame, Paris.
Political activist and French playwright Olympe de Gouges was guillotined.
Queen Marie Antoinette was executed during the French Revolution.
President George Washington marked the location for the Capitol Building in Washington, DC.
The Reign of Terror occurred in France, where many massacres and public executions happened during the French Revolution.
During the French Revolution, a mass levy was adopted, making it compulsory for any able-bodied men aged 18 to 25 to join military service.
