June 20451 – Battle of Chalons: Flavius Aetius' battles Attila the Hun. After the battle, which was inconclusive, Attila retreats, causing the Romans to interpret it as a victory. 1180 – First Battle of Uji, starting the Genpei War in Japan. 1622 – The Battle of Höchst takes place during the Thirty Years' War. 1631 – The Sack of Baltimore: The Irish village of Baltimore is attacked by Barbary slave traders. 1652 – Tarhoncu Ahmed Pasha is appointed Grand Vizier of the Ottoman Empire.
May 5553 – The Second Council of Constantinople begins. 1215 – Rebel barons renounce their allegiance to King John of England — part of a chain of events leading to the signing of the Magna Carta. 1260 – Kublai Khan becomes ruler of the Mongol Empire. 1494 – On his second voyage to the New World, Christopher Columbus sights Jamaica, landing at Discovery Bay and declares Jamaica the property of the Spanish crown. 1609 – Daimyō (Lord) Shimazu Tadatsune of the Satsuma Domain in southern Kyūshū, Japan, completes his successful invasion of the Ryūkyū Kingdom in Okinawa.
April 11491 – Flavius Anastasius becomes Byzantine emperor, with the name of Anastasius I. 1241 – Batu Khan defeats Béla IV of Hungary at the Battle of Mohi. 1512 – War of the League of Cambrai: Franco-Ferrarese forces led by Gaston de Foix and Alfonso I d'Este win the Battle of Ravenna against the Papal-Spanish forces. 1544 – Italian War of 1542–46: A French army defeats Habsburg forces at the Battle of Ceresole, but fails to exploit its victory.
August 29708 – Copper coins are minted in Japan for the first time (Traditional Japanese date: August 10, 708). 870 – The city of Melite surrenders to an Aghlabid army following a siege, putting an end to Byzantine Malta. 1009 – Mainz Cathedral suffers extensive damage from a fire, which destroys the building on the day of its inauguration. 1219 – Battle of Fariskur during the Fifth Crusade 1261 – Pope Urban IV succeeds Pope Alexander IV, becoming the 182nd pope.
April 30311 – The Diocletianic Persecution of Christians in the Roman Empire ends. 1315 – Enguerrand de Marigny is hanged at the instigation of Charles, Count of Valois. 1492 – Spain gives Christopher Columbus his commission of exploration. He is named admiral of the ocean sea, viceroy and governor of any territory he discovers. 1513 – Edmund de la Pole, Yorkist pretender to the English throne, is executed on the orders of Henry VIII. 1557 – Mapuche leader Lautaro is killed by Spanish forces at the Battle of Mataquito in Chile.
July 10138 – Emperor Hadrian of Rome dies of heart failure at his residence on the bay of Naples, Baiae; he is buried at Rome in the Tomb of Hadrian beside his late wife, Vibia Sabina. 645 – Isshi Incident: Prince Naka-no-Ōe and Fujiwara no Kamatari assassinate Soga no Iruka during a coup d'état at the imperial palace. 988 – The Norse King Glúniairn recognises Máel Sechnaill mac Domnaill, High King of Ireland, and agrees to pay taxes and accept Brehon Law; the event is considered to be the founding of the city of Dublin.
December 1800 – A council is convened in the Vatican, at which Charlemagne is to judge the accusations against Pope Leo III. 1420 – Henry V of England enters Paris alongside his father-in-law King Charles VI of France. 1577 – Courtiers Christopher Hatton and Thomas Heneage are knighted by Queen Elizabeth I of England. 1640 – End of the Iberian Union: Portugal acclaims as King João IV of Portugal, ending 59 years of personal union of the crowns of Portugal and Spain and the end of the rule of the Philippine Dynasty.
March 191277 – The Byzantine–Venetian treaty of 1277 is concluded, stipulating a two-year truce and renewing Venetian commercial privileges in the Byzantine Empire. 1279 – A Mongol victory at the Battle of Yamen ends the Song dynasty in China. 1284 – The Statute of Rhuddlan incorporates the Principality of Wales into England. 1452 – Frederick III of Habsburg is the last Holy Roman Emperor crowned by medieval tradition in Rome by Pope Nicholas V. 1563 – The Edict of Amboise is signed, ending the first phase of the French Wars of Religion and granting certain freedoms to the Huguenots.
1821January 21 – Peter I Island in the Antarctic is first sighted, by Fabian Gottlieb von Bellingshausen. January 26 – Congress of Laibach convenes in Laibach to deal with outstanding international issues, particularly the outbreak of a revolution in southern Italy. January 28 – Alexander Island, the largest in Antarctica, is first discovered by Fabian Gottlieb von Bellingshausen. February 9 – Columbian College in the District of Columbia is chartered by President James Monroe (it becomes George Washington University).
August 26683 – Yazid I's army kills 11,000 people of Medina including notable Sahabas in Battle of al-Harrah. 1071 – The Seljuq Turks defeat the Byzantine army at the Battle of Manzikert, and soon gain control of most of Anatolia. 1278 – Ladislaus IV of Hungary and Rudolf I of Germany defeat Ottokar II of Bohemia in the Battle on the Marchfeld near Dürnkrut in (then) Moravia. 1303 – Chittorgarh falls to the Delhi Sultanate. 1346 – At the Battle of Crécy, an English army easily defeats a French one twice its size.
