Europe

• December 29 – Charles the Bald
  Charles the Bald
  Charles the Bald , Holy Roman Emperor and King of West Francia , was the youngest son of the Emperor Louis the Pious by his second wife Judith.-Struggle against his brothers:He was born on 13 June 823 in Frankfurt, when his elder...
  
  , king
  Monarch
  A monarch is the person who heads a monarchy. This is a form of government in which a state or polity is ruled or controlled by an individual who typically inherits the throne by birth and occasionally rules for life or until abdication...
  
   of West Francia, is crowned emperor.
• The Danes capture Lindisfarne
  Lindisfarne
  Lindisfarne is a tidal island off the north-east coast of England. It is also known as Holy Island and constitutes a civil parish in Northumberland...
  
   and arrive in Cambridge
  Cambridge
  The city of Cambridge is a university town and the administrative centre of the county of Cambridgeshire, England. It lies in East Anglia about north of London. Cambridge is at the heart of the high-technology centre known as Silicon Fen – a play on Silicon Valley and the fens surrounding the...
  
  .
• Harald Fairhair subdues the rovers on Orkney and Shetland and adds them to his kingdom.

Asia

• In Champa
  Champa
  The kingdom of Champa was an Indianized kingdom that controlled what is now southern and central Vietnam from approximately the 7th century through to 1832.The Cham people are remnants...
  
  , in the central region of what is now Vietnam
  Vietnam
  Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
  
  , King Indravarman II founds a new dynasty at Indrapura (Quang Nam) and initiates a building program featuring the Dong Duong Style
  Art of Champa
  Champa was an Indic civilization that flourished along the coasts of what is now central and southern Vietnam for roughly a one thousand year period between 500 AD and 1500 AD. The original Chams were probably colonists from the Indonesian islands, who adopted as their principal vocations those of...
  
   of Cham art.

Africa

• The construction of Mosque of Uqba, Kairouan
  Kairouan
  Kairouan , also known as Kirwan or al-Qayrawan , is the capital of the Kairouan Governorate in Tunisia. Referred to as the Islamic Cultural Capital, it is a UNESCO World Heritage site. The city was founded by the Arabs around 670...
  
  , Tunisia
  Tunisia
  Tunisia , officially the Tunisian RepublicThe long name of Tunisia in other languages used in the country is: , is the northernmost country in Africa. It is a Maghreb country and is bordered by Algeria to the west, Libya to the southeast, and the Mediterranean Sea to the north and east. Its area...
  
  , is ended.

Deaths

• August 12 – Louis II
  Louis II, Holy Roman Emperor
  Louis II the Younger was the King of Italy and Roman Emperor from 844, co-ruling with his father Lothair I until 855, after which he ruled alone. Louis's usual title was imperator augustus , but he used imperator Romanorum after his conquest of Bari in 871, which led to poor relations with Byzantium...
  
  , Western Emperor
• Amram Gaon
  Amram Gaon
  Amram Gaon was a famous Gaon or head of the Jewish Talmud Academy of Sura in the 9th century. He was the author of many Responsa, but his chief work was liturgical.He was the first to arrange a complete liturgy for the synagogue...
  
  , Jewish liturgist
• Abu Muslim
  Abu Muslim
  - External links :* *...
  
  , Persian hadith compiler