Trojan War: Troy is sacked and burned, according to calculations by Eratosthenes.

Trojan WarTroyEratosthenes

Marcomannic Wars: The Roman army in Moravia is encircled by the Quadi, who have broken the peace treaty (171). In a violent thunderstorm emperor Marcus Aurelius defeats and subdues them in the so-called "miracle of the rain".

Marcomannic WarsRoman armyMoraviaQuadi171

Emperor Taizong of Tang, the Emperor of China, sends envoys to the Xueyantuo bearing gold and silk in order to seek the release of enslaved Chinese prisoners captured during the transition from Sui to Tang from the northern frontier; this embassy succeeded in freeing 80,000 Chinese men and women who were then returned to China.

Emperor Taizong of TangEmperor of ChinaXueyantuoGoldSilk

A Hasanid Alid uprising in Mecca is crushed by the Abbasids at the Battle of Fakhkh. Idris ibn Abdallah flees to the Maghreb, where he later founds the Idrisid dynasty.

HasanidAlidMeccaAbbasidsBattle of Fakhkh

Roger of Salerno, Prince of Antioch, captures Azaz from the Seljuk Turks.

Roger of SalernoPrincipality of AntiochAzazSeljuk Turks

Albert I of Brandenburg, also called The Bear (Ger: Albrecht der Bär), becomes the founder of the Margraviate of Brandenburg, Germany and the first Margrave.

Albert I of BrandenburgMargraviateBrandenburgGermanyMargrave

The megas doux Alexios Apokaukos, chief minister of the Byzantine Empire, is lynched by political prisoners.

Megas douxAlexios ApokaukosByzantine Empire

Hundred Years' War: Start of the Battle of Jargeau.

Hundred Years' WarBattle of Jargeau

Battle of Sauchieburn: Fought between rebel Lords and James III of Scotland, resulting in the death of the King.

Battle of Sauchieburn

Henry VIII of England marries Catherine of Aragon.

Henry VIII of EnglandCatherine of Aragon

Philip II recognizes the rights and privileges of the local nobles and chieftains in the Philippines, which paved way to the stabilization of the rule of the Principalía (an elite ruling class of native nobility in Spanish Philippines).

Philip II of SpainPhilippinesPrincipalía

Denmark adopts the characteristic Nordic Cross flag later taken up by all other Scandinavian countries.

DenmarkNordic Cross flag

British explorer Captain James Cook runs aground on the Great Barrier Reef.

James CookGreat Barrier Reef

The American Revolutionary War's first naval engagement, the Battle of Machias, results in the capture of a small British naval vessel.

American Revolutionary WarBattle of Machias

The Continental Congress appoints Thomas Jefferson, John Adams, Benjamin Franklin, Roger Sherman, and Robert R. Livingston to the Committee of Five to draft a declaration of independence.

Continental CongressThomas JeffersonJohn AdamsBenjamin FranklinRoger Sherman

Russian explorer Gerasim Izmailov reaches Alaska.

Gerasim Izmailov

A fire consumes large portions of Detroit in the Michigan Territory.

History of DetroitDetroitMichigan Territory

The first cornerstone is laid for Fort Hamilton in New York City.

CornerstoneFort HamiltonNew York City

The Broad Street Riot occurs in Boston, fueled by ethnic tensions between Yankees and Irish.

Broad Street RiotBostonYankeeIrish people

The Naval Battle of the Riachuelo is fought on the rivulet Riachuelo (Argentina), between the Paraguayan Navy on one side and the Brazilian Navy on the other. The Brazilian victory was crucial for the later success of the Triple Alliance (Brazil, Uruguay, and Argentina) in the Paraguayan War.

Battle of the RiachueloArgentinaParaguayan NavyBrazilian NavyTreaty of the Triple Alliance

The Limelight Department, one of the world's first film studios, is officially established in Melbourne, Australia.

Limelight DepartmentFilm studioMelbourne

Paris-Bordeaux-Paris, sometimes called the first automobile race in history or the "first motor race", takes place.

Paris-Bordeaux-Paris

The Hundred Days' Reform, a planned movement to reform social, political, and educational institutions in China, is started by the Guangxu Emperor, but is suspended by Empress Dowager Cixi after 104 days. (The failed reform led to the abolition of the Imperial examination in 1905.)

Hundred Days' ReformGuangxu EmperorEmpress Dowager CixiImperial examination1905

The boundaries of the Colony of New Zealand are extended by the UK to include the Cook Islands.

Colony of New ZealandCook Islands

A group of Serbian officers stormed the royal palace and assassinated King Alexander Obrenović and his wife, Queen Draga.

May Coup (Serbia)Alexander I of SerbiaDraga Mašin

King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.

Alexander of GreeceKingdom of GreeceConstantine I of GreeceTriple EntenteAthens

Sir Barton wins the Belmont Stakes, becoming the first horse to win the U.S. Triple Crown.

Sir BartonBelmont StakesTriple Crown of Thoroughbred Racing

During the U.S. Republican National Convention in Chicago, U.S. Republican Party leaders gathered in a room at the Blackstone Hotel to come to a consensus on their candidate for the U.S. presidential election, leading the Associated Press to coin the political phrase "smoke-filled room".

1920 Republican National ConventionRepublican Party (United States)Blackstone HotelUnited States presidential election, 1920Associated Press

Inventor Edwin Armstrong gives the first public demonstration of FM broadcasting in the United States at Alpine, New Jersey.

Edwin ArmstrongFrequency modulationAlpine, New Jersey

The London International Surrealist Exhibition opens.

London International Surrealist Exhibition