November 9694 – At the Seventeenth Council of Toledo, Egica, a king of the Visigoths of Hispania, accuses Jews of aiding Muslims, sentencing all Jews to slavery. 1277 – The Treaty of Aberconwy, a humiliating settlement forced on Llywelyn ap Gruffudd by King Edward I of England, brings a temporary end to the Welsh Wars. 1313 – Louis the Bavarian defeats his cousin Frederick I of Austria at the Battle of Gammelsdorf. 1330 – At the Battle of Posada, Basarab I of Wallachia defeats the Hungarian army of Charles I Robert.
1922January 1922 January 7 – Dáil Éireann, the parliament of the Irish Republic, ratifies the Anglo-Irish Treaty by 64–57 votes. January 10 – Arthur Griffith is elected President of Dáil Éireann, the day after Éamon de Valera resigns. January 11 – The first successful insulin treatment of diabetes is made, by Frederick Banting in Toronto. January 15 – Michael Collins becomes Chairman of the Provisional Government of the Irish Free State. January 26 – Italian forces occupy Misrata, Libya; the reconquest of Libya begins.
1928January 1928 January – British bacteriologist Frederick Griffith reports the results of Griffith's experiment, indirectly proving the existence of DNA. January 1 – Eastern Bloc emigration and defection: Boris Bazhanov, Joseph Stalin's personal secretary, crosses the border to Iran to defect from the Soviet Union. January 17 – The OGPU arrests Leon Trotsky in Moscow; he assumes a status of passive resistance and is exiled with his family. January 26 – The volcanic island Anak Krakatau appears.
September 22904 – The warlord Zhu Quanzhong kills Emperor Zhaozong, the penultimate emperor of the Tang dynasty, after seizing control of the imperial government. 1236 – The Samogitians defeat the Livonian Brothers of the Sword in the Battle of Saule. 1499 – The Treaty of Basel concludes the Swabian War. 1586 – The Battle of Zutphen is a Spanish victory over the English and Dutch. 1692 – The last hanging of those convicted of witchcraft in the Salem witch trials; others are all eventually released.
April 201303 – The Sapienza University of Rome is instituted by a bull of Pope Boniface VIII. 1653 – Oliver Cromwell dissolves England's Rump Parliament. 1657 – English Admiral Robert Blake destroys a Spanish silver fleet, under heavy fire from the shore, at the Battle of Santa Cruz de Tenerife. 1657 – Freedom of religion is granted to the Jews of New Amsterdam (later New York City). 1752 – Start of Konbaung–Hanthawaddy War, a new phase in the Burmese Civil War (1740–57).
1937January 1937 January 1 – Anastasio Somoza García becomes President of Nicaragua. January 5 – Water levels begin to rise in the Ohio River in the United States, leading to the Ohio River flood of 1937, which continues into February, leaving 1 million people homeless and 385 people dead. January 15 – Spanish Civil War: Second Battle of the Corunna Road ends inconclusively. January 20 – Second inauguration of Franklin D. Roosevelt: Franklin D. Roosevelt is sworn in for a second term as President of the United States.
November 18326 – The old St. Peter's Basilica is consecrated by Pope Sylvester I. 401 – The Visigoths, led by king Alaric I, cross the Alps and invade northern Italy. 1095 – The Council of Clermont begins: called by Pope Urban II, it led to the First Crusade to the Holy Land. 1105 – Maginulfo is elected Antipope Sylvester IV in opposition to Pope Paschal II. 1210 – Pope Innocent III excommunicates Holy Roman Emperor Otto IV for invading the Kingdom of Sicily after promising to recognize papal control over it.
1919January 1919 January 1 The Czechoslovak Legions occupy much of the self-proclaimed "free city" of Pressburg (now Bratislava), enforcing its incorporation into the new republic of Czechoslovakia. HMY Iolaire sinks off the coast of the Hebrides; 201 people, mostly servicemen returning home to Lewis and Harris, are killed. January 2–22 – Russian Civil War: The Red Army's Caspian-Caucasian Front begins the Northern Caucasus Operation against the White Army, but fails to make progress.
1902January 1902 January 1 The Nurses Registration Act 1901 comes into effect in New Zealand, making it the first country in the world to require state registration of nurses. On January 10, Ellen Dougherty becomes the world's first registered nurse. Nathan Stubblefield demonstrates his wireless telephone device in the U.S. state of Kentucky. January 8 – A train collision in the New York Central Railroad's Park Avenue Tunnel kills 17 people, injures 38, and leads to increased demand for electric trains and the banning of steam locomotives in New York City.
January 22613 – Eight-month-old Constantine is crowned as co-emperor (Caesar) by his father Heraclius at Constantinople. 871 – Battle of Basing: The West Saxons led by King Æthelred I are defeated by the Danelaw Vikings at Basing. 1506 – The first contingent of 150 Swiss Guards arrives at the Vatican. 1517 – The Ottoman Empire under Selim I defeats the Mamluk Sultanate and captures present-day Egypt at the Battle of Ridaniya. 1555 – The Ava Kingdom falls to the Taungoo Dynasty in what is now Myanmar.