May 7351 – The Jewish revolt against Constantius Gallus breaks out after his arrival at Antioch. 558 – In Constantinople, the dome of the Hagia Sophia collapses, twenty years after its construction. Justinian I immediately orders that the dome be rebuilt. 1274 – In France, the Second Council of Lyon opens; it ratified a decree to regulate the election of the Pope. 1487 – The Siege of Málaga commences during the Spanish Reconquista. 1544 – The Burning of Edinburgh by an English army is the first action of the Rough Wooing.
October 201568 – The Spanish Duke of Alba defeats a Dutch rebel force under William the Silent. 1572 – Eighty Years' War: Three thousand Spanish soldiers wade through fifteen miles of water in one night to effect the relief of Goes. 1740 – France, Prussia, Bavaria and Saxony refuse to honour the Pragmatic Sanction, and the War of the Austrian Succession begins. 1774 – American Revolution: The Continental Association, a nonconsumption and nonimportation agreement against the British Isles and the British West Indies, is adopted by the First Continental Congress.
October 5610 – Heraclius arrives at Constantinople, kills Byzantine Emperor Phocas, and becomes emperor. 816 – King Louis the Pious is crowned emperor of the Holy Roman Empire by the Pope. 869 – The Fourth Council of Constantinople is convened to depose patriarch Photios I. 1143 – With the signing of the Treaty of Zamora, King Alfonso VII of León and Castile recognises Portugal as a Kingdom. 1450 – Louis IX, Duke of Bavaria expels Jews from his jurisdiction. 1607 – Assassins attempt to kill Venetian statesman and scientist Paolo Sarpi.
June 10671 – Emperor Tenji of Japan introduces a water clock (clepsydra) called Rokoku. The instrument, which measures time and indicates hours, is placed in the capital of Ōtsu. 1190 – Third Crusade: Frederick I Barbarossa drowns in the river Saleph while leading an army to Jerusalem. 1329 – The Battle of Pelekanon is the last attempt of the Byzantine Empire to retain its cities in Asia Minor. 1358 – Battle of Mello: The peasant forces of the Jacquerie are crushed by the army of the French nobility.
November 19461 – Libius Severus is declared emperor of the Western Roman Empire. The real power is in the hands of the magister militum Ricimer. 636 – The Rashidun Caliphate defeats the Sasanian Empire at the Battle of al-Qādisiyyah in Iraq. 1493 – Christopher Columbus goes ashore on an island called Borinquen he first saw the day before. He names it San Juan Bautista (later renamed again Puerto Rico). 1794 – The United States and the Kingdom of Great Britain sign Jay's Treaty, which attempts to resolve some of the lingering problems left over from the American Revolutionary War.
March 9141 BC – Liu Che, posthumously known as Emperor Wu of Han, assumes the throne over the Han dynasty of China. 1009 – First known mention of Lithuania, in the annals of the monastery of Quedlinburg. 1226 – Khwarazmian sultan Jalal ad-Din conquers the Georgian capital of Tbilisi. 1230 – Bulgarian Tsar Ivan Asen II defeats Theodore of Epirus in the Battle of Klokotnitsa. 1500 – The fleet of Pedro Álvares Cabral leaves Lisbon for the Indies. The fleet will discover Brazil which lies within boundaries granted to Portugal in the Treaty of Tordesillas in 1494.
April 23215 BC – A temple is built on the Capitoline Hill dedicated to Venus Erycina to commemorate the Roman defeat at Lake Trasimene. 599 – Maya king Uneh Chan of Calakmul attacks rival city-state Palenque in southern Mexico, defeating queen Yohl Ik'nal and sacking the city. 711 – Dagobert III succeeds his father King Childebert III as King of the Franks. 1014 – Battle of Clontarf: High King of Ireland Brian Boru defeats Viking invaders, but is killed in battle. 1016 – Edmund Ironside succeeds his father Æthelred the Unready as King of England.
May 16946 – Emperor Suzaku abdicates the throne in favor of his brother Murakami who becomes the 62nd emperor of Japan. 1204 – Baldwin IX, Count of Flanders is crowned as the first Emperor of the Latin Empire. 1364 – Hundred Years' War: Bertrand du Guesclin and a French army defeat the Anglo-Navarrese army of Charles the Bad at Cocherel. 1426 – Gov. Thado of Mohnyin becomes king of Ava. 1527 – The Florentines drive out the Medici for a second time and Florence re-establishes itself as a republic.
September 9337 – Constantine II, Constantius II, and Constans succeed their father Constantine I as co-emperors. The Roman Empire is divided between the three Augusti. 1000 – Battle of Svolder, Viking Age. 1141 – Yelü Dashi, the Liao dynasty general who founded the Qara Khitai, defeats the Seljuq and Kara-Khanid forces at the Battle of Qatwan. 1320 – In the Battle of Saint George, the Byzantines under Andronikos Asen ambush and defeat the forces of the Principality of Achaea, securing possession of Arcadia.
February 2506 – Alaric II, eighth king of the Visigoths, promulgates the Breviary of Alaric (Breviarium Alaricianum or Lex Romana Visigothorum), a collection of "Roman law". 880 – Battle of Lüneburg Heath: King Louis III of France is defeated by the Norse Great Heathen Army at Lüneburg Heath in Saxony. 962 – Translatio imperii: Pope John XII crowns Otto I, Holy Roman Emperor, the first Holy Roman Emperor in nearly 40 years. 1032 – Conrad II, Holy Roman Emperor becomes king of Burgundy.
