900

Year 900 (CM) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar.

Events

By place

Abbasid Caliphate

• Spring – Forces under the Transoxianian emir
  Sunni
  power.
• Arab–Byzantine wars: Emperor Leo VI ("the Wise") begins an offensive against the Abbasid army in Cilicia, Upper Mesopotamia and Armenia. He also continues the war against the Muslims in Sicily and southern Italy.^[3]
• The future founder of the
  Fatimah, the daughter of the Islamic prophet Muhammad
  .
• The
  al-Bahrayn, under Abu Sa'id al-Jannabi, score a major victory over the Abbasid army led by al-Abbas ibn Amr al-Ghanawi
  .

• Spring –
  Saracens. They have establish themselves on the banks of the Garigliano River. From here, Arab warbands launch frequent raids in Campania.^[4]
• Constance.^[5]
• June 8 – Edward the Elder (son of Alfred the Great) is crowned king of England at Kingston upon Thames.^[6]
• Baldwin II, Count of Flanders has Fulk the Venerable, bishop of Reims, assassinated.^[7]
• June 29 – The Venetians repel the Magyar raiders at Rialto.^[8]
• Summer – After the death of his wife Zoe Zaoutzaina, the Byzantine emperor Leo VI marries Eudokia Baïana.^[9]
• August – Abdallah, son of the Aghlabid emir Ibrahim II, represses a revolt of his Muslim subjects, and then initiates a campaign against the last Byzantine strongholds in Sicily.^[3]
• Meuse River, while fighting against his rebellious subjects; subsequently they recognize Louis IV as their rightful suzerain - Lotharingia is then converted from a kingdom to a duchy.^[10]
• Magyars raids in Lombardy, king Louis III ("the Blind") is called to Italy by the grandees. He takes Pavia, forcing king Berengar I to flee, and replaces him as King of Italy.^[11]
• King Donald II is killed after an 11-year reign. He is succeeded by his cousin Constantine II as king of Scotland;^[12] he will reign for more than 40 years.
• Docibilis I of Gaeta and his Saracen mercenaries attack Capua, in vain.^[13]
• After the rejection of their alliance proposal by the Bavarians, the Hungarians attack this country, occupying Pannonia and parts of Ostmark, which become part of the Hungarian state.

Asia

• Tondo, as represented by Jayadewa, Lord Minister of Pila, which released them of all their debts as inscribed in the Laguna Copperplate Inscription (Philippines
  ).
• Pandyan Empire (India).^[14]
• December 1 – Emperor Zhao Zong is deposed and forced by a group of Tang eunuchs led by Liu Jishu to abdicate the throne to his son, Crown Prince Li Yu (until 901).

Mesoamerica

• The Postclassic Period: The Maya civilization that has flourished for about 650 years in upland areas of what later will be called Central America comes to an end as a result either of depleted agricultural resources or warfare between some 40 rival city-states. The great stone pyramids, ball courts and other structures at cities such as Tikal, Copán, and Palenque are abandoned and overgrown with jungle, as will eventually be the sculpture and relief carvings of the Maya, who have developed a calendar based on almost perfect astronomic measurements. Cities such as Chichen Itza, Mayapan and Uxmal in the highlands of the Yucatán Peninsula will continue to flourish.
• In Peru the Lambayeque people establish themselves over areas previously developed by the Moche (approximate date).

By topic

Art

• c. 900 –
  Ancestral Pueblo people
  .

Religion

• January – Pope John IX dies after a two year reign. He is succeeded by Benedict IV as the 117th pope of the Catholic Church.^[15]

Commerce

• The east coast of Africa is impacted by trade and Arab, Persian and Indian traders mix with the indigenous Bantu. Many of the coastal Bantu adopt Islam, reaching as far south as Sofala (Mozambique).

Exploration

• Greenland is discovered by the Norseman Gunnbjörn Ulfsson, sailing from Norway to Iceland: he is blown off course by a storm and comes in sight of some islands off the coast (approximate date).

Medicine

• The
  Muhammad ibn Zakariya al-Razi distinguishes smallpox from measles in the course of his writings. Holding against any sort of orthodoxy, particularly Aristotle
  's physics, he maintains the conception of an 'absolute' time, regarded by him as "a never-ending flow".

• Abū Ja'far al-Khāzin, Persian astronomer (d. 971
  )
• Bremen
  (approximate date)
• Berengar II, king of Italy (approximate date)
• Berthold, duke of Bavaria (approximate date)
• Constance
  (approximate date)
• Fujiwara no Saneyori, Japanese statesman (d. 970)
• Gero, archbishop of Cologne (approximate date)
• Gero, Frankish nobleman (approximate date)
• John of Gorze, Frankish abbot and diplomat (d. 974)
• Mord Fiddle, Icelandic farmer and law expert (d. 968)
• Nicodemus of Mammola, Italian monk (d. 990)
• Ramiro II, king of León (approximate date)
• Ramwold, Frankish abbot (approximate date)
• Rasso, Frankish military leader (approximate date)
• Wu (d. 939
  )

• June 17 – Fulk, archbishop of Reims
• July 8 – Qatr al-Nada, wife of the Abbasid caliph al-Mu'tadid^[16]
• August 13 – Zwentibold, king of Lotharingia (b. 870)
• Donald II, king of the Picts (Scotland)^[17]
• Dongshan Shouchu, Chinese Zen teacher
• Eardulf, bishop of Lindisfarne (approximate date)
• Fujiwara no Takafuji, Japanese nobleman (b. 838)
• Ibn Abi Asim, Muslim Sunni scholar (b. 822)
• John IX, pope of the Catholic Church
• Lde-dpal-hkhor-btsan
  , Indian ruler
• Litan, Irish abbot (approximate date)
• Liu Chongwang, chancellor of the Tang Dynasty
• Li Zhirou, chancellor of the Tang Dynasty
• Merfyn ap Rhodri, king of Powys (approximate date)
• Muhammad ibn Zayd, emir of Tabaristan (Iran)
• Ono no Komachi, Japanese poet (approximate date)
• Tadg mac Conchobair, king of Connacht (Ireland)
• Wang Tuan, chancellor of the Tang Dynasty
• Wulfhere, archbishop of York (approximate date)

References