909

By place

Britain

• King Edward the Elder and his sister, Princess Æthelflæd of Mercia, raid Danish East Anglia and bring back the relics of St. Oswald in triumph. Æthelflæd translates them to the new minster in Gloucester, which is renamed St. Oswald's Priory in his honour.
• Edward the Elder despatches an Anglo-Saxon army to attack the Northumbrian Vikings and ravages Scandinavian York.

  Africa

• March 18 - The Fatimid Dynasty founded by Shiite Muslims in Ifriqiya gains suzerainty over the Aghlabid Dynasty in North Africa. Emir Ziyadat Allah III escapes to the Near East, unable to secure any help from the Abbasid Caliphate to regain his emirate.
• The Berber Kutama tribesmen under Abdullah al-Mahdi Billah capture the cities of Kairouan and Raqqada. The capital city of the Rustamid imamate, Tihert is destroyed. The remaining Ibadi are forced into the desert.
• Winter - Abdullah al-Mahdi Billah takes up the leadership of the Fatimid state and proclaims himself Caliph Abdullah.

  China

• April 27 - The Min Kingdom is established by governor Wang Shenzhi, with Fuzhou as its capital. Wang Shenzhi tries to attract scholars who will help to construct an efficient bureaucracy and tax system.

  Mesoamerica

• The last Long Count date is inscribed on a monument at the Mayan site of Toniná, marking the end of the Classic Maya Period.

  By topic

Religion

• Asser, bishop of Sherborne, dies. His See is divided, there are new Bishoprics created at Wells, Crediton, Ramsbury and Sonning.