Europe

• 17 June (traditional date) – The Althing, the parliament of Iceland, is established at þingvellir ("Thing Fields"). Chieftains from various tribes gather for 2 weeks at a thing (assembly) to settle disputes, arrange marriages, etc.; it continues in existence into the 21st century, as the world's oldest parliament of the Icelandic Commonwealth.
• Bishopwearmouth is formed and settled in the north-east of England, after Æthelstan grants the lands to the Bishop of Durham.
• Gilbert, Duke of Lorraine, besieges Douai in West Francia.

Arabian Empire

• January 11 – Sack of Mecca: The Qarmatians, led by Abu Tahir al-Jannabi, sack Mecca, desecrating the Zamzam Well and carrying off the Black Stone to their homeland in Eastern Arabia.^[1]
• Mardavij ibn Ziyar is sent by Asfar ibn Shiruya along with his brother Shirzad, to capture the fortress of Shamiran in Tarom (Northern Iran), the capital of the Sallarid ruler Muhammad ibn Musafir. During the siege Mardavij is persuaded to revolt against Asfar, by letters from Makan ibn Kaki. With the help of the sons of the Sallarid, he kills other members of his tribe, including Shirzad. Mardavij founds the Ziyarid Dynasty and becomes the ruler of Asfar's former territories, which include Rey, Qazvin, Zanjan, Abhar, Qom and Karaj.

Asia

• October 16 – Emperor Daigo of Japan, being fatally ill, abdicates in favor of his 7-year-old son Suzaku, after a 33-year reign. He enters the Buddhist priesthood, but dies shortly after. Former Emperor Uda (Daigo's father), remains the power behind the Japanese throne (until 931).
• The independent Korean island state of Usan-guk becomes a protectorate of Goryeo.
• Yelü Bei, prince and elder brother of the Liao dynasty (Khitan) Emperor Taizong, leaves for China.

North Africa

• The Ummayad Caliphate of Córdoba invades and conquers the city of Ceuta, which was ruled by the Berber dynasty Banu Isam.

Europe

• Spring – Hugh of Provence, king of Italy, cedes Lower Burgundy to Rudolph II, in return for Rudolf's renunciation of all claims to the Italian crown. He receives the imperial crown, and induces the Italian nobility to recognize his son Lothair II as the co-ruler of Lombardia (Regnum Italiae).^[2]
• King Harald Fairhair of Norway dies after a 59-year reign as the Scandinavian nation's first ruler. He divides the kingdom among his many sons (about 25 years ago) to bring peace. Unable to travel through the country - and perform his royal duties, Harald hands over power to his favorite son Eric Bloodaxe, who allegedly kills at least two of his brothers to gain the Norwegian throne that he will hold (approximate date).
• Rollo, duke of Normandy, dies at Rouen after an 11-year reign. He is the first leader of the Viking settlers to establish an independent dukedom (a vassal of the West Frankish Kingdom). His eldest son, William I Longsword, becomes the second ruler of Normandy (approximate date).
• Ramiro II forces the abdication of his brother Alfonso IV and becomes king of León (Northern Spain). He has Alfonso and Fruela's three sons blinded in order to make them incapable of ruling.^[3]
• Ramiro II expands the border eastwards (nearly to the Pyrenees) and captures Burgos and the surrounding land. This land would soon be known as the County of Castile (approximate date).

England

• King Morgan Hen of Glywysing and Gwent (Wales) submits to the overlordship of King Æthelstan, and attends his court with Kings Hywel Dda of Deheubarth and Idwal Foel of Gwynedd.

Asia

• Emir Mardavij ibn Ziyar defeats and kills his rival Asfar ibn Shiruya. He conquers in rapid succession the Abbasid cities of Hamadan, Dinavar, and Kashan, and finally the entire region of Isfahan, which becomes his capital. Mardavij appoints his brother Vushmgir as the governor of Amol (modern Iran).

Literature

• Nómina Leonesa, an account of the kings of Asturias and León, is published (approximate date).

Religion

• March – Pope Stephen VII dies after a three-year reign. He is succeeded by John XI (at the age of 20) as the 125th pope of the Catholic Church. His mother Marozia is the powerful senatrix and patricia of Rome.

Europe

• Summer – Alberic II leads an uprising at Rome against his stepfather Hugh of Provence, king of Italy, after he is insulted at the wedding of his mother, Marozia. Alberic seizes the Lateran Palace, and Hugh escapes with an escort out of the city. Marozia is captured and put in prison. Alberic takes control of the city and appoints himself as the ruler (princeps) of Rome.
• Doge Orso II Participazio retires voluntarily to a monastery, marking the end of the Participazio dominance of the Venetian dogeship. He is succeeded by Pietro II Candiano, the son and namesake of the earlier doge Pietro I.
• Pietro II and Capodistria make a trade agreement without imperial authorization, the self-proclaimed "Marquis" Wintkar forbids repaying any debts to Venice. Pietro begins an economic blockade of Istrian cities.^[4]

Asia

• Emir Mardavij ibn Ziyar invades Tabaristan and captures the city of Gorgan. The Daylamite military leader Makan ibn Kaki tries to reclaim his territories, but fails. He seeks refuge among the Samanids and enters the service of their ruler Nasr II. He appoints him as governor of Kirman (modern Iran).

Dirham of Abbasid caliph Al-Muqtadir (r. 908–932)

• October 31 – Abbasid caliph al-Muqtadir is killed while fighting against the forces of general Mu'nis al-Muzaffar. Al-Muqtadir's brother al-Qahir is chosen to succeed him.

Religion

• Summer – Pope John XI is forced to grant power over Rome to his half-brother Alberic II, who is invested as "Prince and Senator of all Romans". John is to resign himself to spiritual leadership of the Catholic Church.

Europe

• Spring – Hugh of Provence, king of Italy, launches an expedition to Rome to remove the Roman ruler (princeps) Alberic II and avenge his humiliation (see 932). It fails, however, as Roman civic militias repel the Lombard army. Hugh ravages the Italian countryside, before he withdraws to Pavia.^[5]
• March 15 – Battle of Merseburg: King Henry I ("the Fowler") defeats the Magyars near Merseburg after his refusal to pay the annual tribute. During Henry's lifetime they never raid the East Frankish Kingdom again.^[6]
• William I ("Longsword"), duke of Normandy, recognizes King Rudolph as his overlord. In turn he gives William the Cotentin Peninsula and the Channel Islands.^[7]

England

• Prince Edwin, the youngest son of the late King Edward the Elder, is drowned en route to the West Frankish Kingdom and buried at Saint Bertin.

Africa

• Fatimid forces fail to seize the Maghreb al-Aqsa (modern Morocco) from the local Berber tribes allied to the Spain-based Caliphate of Córdoba.^[8]

Byzantine Empire

• Spring and Summer – The Hungarians make an alliance with the Pechenegs, and fight their way through Thrace to Constantinople.
• Battle of W.l.n.d.r: The Hungarians and Pechenegs kill Constantinople's inhabitants, inflict severe damage on the countryside, and defeat both the Byzantine Empire and Bulgaria, forcing them to pay tribute. Emperor Romanos I signs a peace treaty with the Hungarians.^[9]

Europe

• King Henry I ("the Fowler") pacifies the territories to the north, where the Danish Vikings have been harrying the Frisians by sea. He defeats the Danes petty King Gnupa, and conquers Hedeby.
• Summer – Caliph Abd-al-Rahman III invades Navarra and forces Queen Toda to submit to him. Her son the 15-year-old King García Sánchez I becomes a vassal of the Caliphate of Córdoba.
• Haakon I ("the Good"), a son of the late King Harald Fairhair, once again reunites the kingdom after he has deposed his half-brother Eric Bloodaxe. Haakon is installed as king of Norway.
• The Eldgjá volcanic eruption is the largest basalt flood in history (first documented).

England

• King Tewdwr of Brycheiniog attends the court of King Æthelstan and signs the English Land Charters. Kings Hywel Dda of Deheubarth, Idwal Foel of Gwynedd and Morgan Mwynfawr ("the Old") of Morgannwg are compelled to accompany Æthelstan on his campaign against King Constantine II of Scotland.

Abbasid Caliphate

• April 24 – Abbasid caliph al-Qahir is deposed and blinded; he is succeeded by his nephew ar-Radi.
• Summer – Ali ibn Buya, a Samanid governor, takes advantage of the anarchy in Persia and conquers Fars (modern Iran). He founds the Buyid Dynasty, and makes Shiraz his capital. Ali seeks the recognition of the Abbasid caliph Ar-Radi, who confirms him later as his viceroy.

Asia

• March 16 – Meng Zhixiang, a military governor (jiedushi), declares himself emperor (formally called "Gaozu") and establishes Later Shu as a new Chinese state, independent of Later Tang. He dies after a short-lived five-month reign and is succeeded by his son Meng Chang.
• Goryeo forces push the army of Hubaekje back into its heartland and defeat them finally at Hongseong (modern South Korea).

Religion

• Einsiedeln Abbey, a Benedictine monastery, is founded (modern Switzerland).

Europe

• Spring – Arnulf I ("the Bad") of Bavaria invades Italy, crossing through the Upper Adige (modern Tyrol). He proceeds towards Verona to join his supporters. King Hugh of Provence takes a Burgundian army against him, and defeats Arnulf at Gossolengo, forcing him to return to Bavaria.
• Summer – Fatimid caliph al-Qa'im dispatches a naval expedition under Ya'qub ibn Ishaq al-Tamimi to raid the coast of Provence and Liguria, sacking Genoa on 16 August and attacking Pisa. Ya'qub also raids Corsica and Sardinia before returning to Mahdia with some 8,000 prisoners.^[10]
• September 28 (probable year) – Wenceslaus I, Duke of Bohemia (the subject of the 1853 Christmas carol "Good King Wenceslas") is murdered by a group of nobles led by his brother Boleslaus I ("the Cruel"), who succeeds him.
• Córdoba, capital of Al-Andalus, becomes the largest city of the world, taking the lead from Baghdad, capital of the Abbasid Caliphate.^[11]

Africa

• Summer – Muhammad ibn Tughj al-Ikhshid is appointed governor and becomes the ruler of Egypt and parts of Syria (or the Levant). He launches a campaign against his rival Ahmad ibn Kayghalagh by land and sea: the naval forces take Tinnis and ibn Kayghalagh is forced to retreat. Ibn Tughj enters Fustat, making it his capital, and founds the Ikhshidid dynasty.
• Ziri ibn Manad is installed as governor of central Maghreb. He initiates the construction of the fortress of Ashir, near Médéa (modern Algeria). It symbolises the rise of the Zirid dynasty in the Western Mediterranean region.^[12]

Arabian Empire

• January – Emir Mardavij, founder of the Ziyarid dynasty, is murdered by his Turkish slaves. He is succeeded by his brother and general Vushmgir, who is crowned as the new Ziyarid ruler in Rey (modern Iran).

Asia

• March – King Gyeon Hwon of Hubaekje is overthrown by his eldest son Kyon Singom (who is crowned on November 15) and put in prison, but he is able to escape.
• November 17 – Wang Yanjun, Emperor Huizong of Min (Ten Kingdoms), is killed in his own palace in an uprising together with his empress consort and several clansmen, and succeeded as second emperor by his son Wang Jipeng.
• King Gyeongsun, the last ruler of Unified Silla, formally surrenders and abdicates in favour of Taejo of Goryeo. This completes Taejo's unification of Korea, bringing the Silla dynasty to an end.
• Ki no Tsurayuki returns to Kyoto from Tosa Province, a journey that becomes the basis of the earliest surviving Japanese poetic diary, called the Tosa Nikki (Tosa Diary).

Religion

• Winter (probable year) – Pope John XI, the son of de facto Roman ruler Marozia, dies at Rome after a four-year reign, aged between 25 and 27.

Europe

• June 19 – At Laon, Louis IV, the 14-year old son of the late King Charles the Simple, is crowned King of West Francia after being recalled from Wessex by Hugh the Great, count of Paris. Hugh, whose father, King Robert I, was killed in battle near Soissons in 923, is given the title Duke of the Franks and becomes the second most powerful man in the West Frankish Kingdom. The crowning of Louis IV follows the death of King Rudolph I at Auxerre earlier in the year.
• Summer – Hugh of Provence, king of Italy, dispatches his son and co-ruler Lothair II with a third expedition to Rome to dislodge Alberic II. Assault after assault is repulsed by the Roman civic militia. At length, weakened by an epidemic, the Lombard nobles press on Hugh to accept a peace treaty mediated by Odo of Cluny.
• July 2 – King Henry I ("the Fowler") dies at his royal palace in Memleben, Thuringia, after a 17-year reign. He is succeeded by his 23-year-old son Otto I, who is married to Eadgyth, a daughter of the late King Edward the Elder. Otto is the first German king to be crowned in Charlemagne's former capital of Aachen.
• A Hungarian army invades Franconia and occupies Fulda. They are attacked by East Frankish forces and forced to go westwards. Otto I moves against the rebellious Elbe Slavs.^[13]
• Archbishop Unni of Hamburg-Bremen visits the king of Denmark Gorm and the king of the Swedes Ring before he dies in Birka.

England

• King Æthelstan sets the border between the Kingdom of England and Cornwall as the east bank of the River Tamar.^[14]

Africa

• Spring – Muhammad ibn Tughj al-Ikhshid, ruler of Egypt and Syria, defeats the Fatimid forces near Alexandria. He drives them out of the city, forcing the Fatimids to retreat from Egypt to their base at Cyrenaica.

Arabian Empire

• Summer – Ibn Muqla, an Abbasid official and vizier, is disgraced after his failed campaign against Muhammad ibn Ra'iq, the rebellious governor of Wasit. He is arrested and imprisoned in Baghdad.

China

• November 28 – Shi Jingtang is enthroned as the first emperor of the Later Jin by Tai Zong, ruler of the Khitan-led Liao Dynasty, following a revolt against his rival, emperor Fei of Later Tang.

Religion

• January 3 – Pope Leo VII succeeds John XI (who died the previous year) as the 126th pope of the Catholic Church.

Europe

• A Hungarian army invades Burgundy, and burns the city of Tournus. Then they go southwards to Italy, pillaging the environs of Naples, Benevento and Monte Cassino. When the Hungarians return home, they are attacked in the Apennine Mountains by Lombard forces, losing their plunder (approximate date).
• July 11 – King Rudolph II of Burgundy dies after a 25-year reign, and is succeeded by his 12-year-old son Conrad I ("the Peaceful"). His wife, Queen Bertha, takes effective control of unified Burgundy, transferring its capital to Arles (that Burgundian kingdom was later known from the 12th century as the Kingdom of Arles).^[15]
• King Otto I refuses to give land to his older (illegitimate) half-brother Thankmar, who gains the support of Eberhard III (duke of Franconia) and Wichmann the Elder, and seizes the fortress of Eresburg. Otto assumes direct rule over Franconia, and dissolves it into smaller counties.^[16]
• King Hugh of Arles (king of Italy) travels to Colombier (Switzerland) and marries Rudolph's widow Bertha. He takes Conrad I under his tutelage and betroths Rudolph's 6-year-old daughter Adelaide with his own son and co-ruler Lothair II.
• Winter – Gero succeeds his brother Siegfried after his death. King Otto I appoints him as count and margrave of a vast border region around Merseburg that abuts the Wends on the River Saale (Lower Saxony).
• Magdeburg becomes the capital of the East Frankish Kingdom, after a Diet held by King Otto I (approximate date).

England

• Battle of Brunanburh: King Æthelstan defeats a combined Northern Army under the kings Olaf of Dublin, Constantine II of Scotland and Owain of Strathclyde. Though none of the British monarchs appear to have taken part, the people of Strathclyde were a major contingent under their Scottish king.

Asia

• November 10 – Li Bian usurps the throne and deposes Emperor Yang Pu. The Wu State is replaced and Li (called "Xu Zhigao") becomes the first emperor of Southern Tang, one of the Ten Kingdoms in southern China.
• Winter – The Later Tang falls to the Later Jin (during the Five Dynasties and Ten Kingdoms period) founded by Emperor Shi Jingtang (posthumously known as "Gaozu of Jin").

Europe

• Summer – The Hungarian army invades Northern Italy with the permission of King Hugh of Arles. They cross the Apennines, and sack the Lombard lands in Tuscany, Lazio and Campania. Finally, the Hungarians are defeated at Wolfenbüttel by a Saxon army.
• July – King Otto I besieges the fortress of Eresburg. He defeats his half-brother Thankmar and kills him as he tries to find sanctuary. Eberhard III, duke of Franconia, is banished and replaced by his uncle Berthold.
• Fall – Otto I defeats in two campaigns a series of uprisings in Saxony, Franconia and Lotharingia.^[17] He signs a "friendship pact" with King Louis IV ("d'Outremer") of the West Frankish Kingdom.

Asia

• Battle of Bach Dang: Vietnamese forces defeat an invading force of the Southern Han state at the Bach Dang River. This put an end to Chinese imperial domination in Vietnam after nearly 1,000 years.
• The Sixteen Prefectures, which includes the area around modern-day Beijing, are absorbed in the Khitan Empire.

Europe

• Hugh the Great, count of Paris, rebels against King Louis IV ("d'Outremer") and gains support from William I, duke of Normandy. Hugh, along with Herbert II, count of Vermandois, Arnulf I, count of Flanders and William pay homage to King Otto I (ruler of the East Frankish Kingdom), and support him in his struggle against Louis.^[18]
• July 19 – Battle of Simancas: Caliph Abd-al-Rahman III of Córdoba claims a Jihad ('Holy War') and raises an army of 100,000 men to end the Kingdom of León. He razes the cities of Medina del Campo, Ìscar and Alcazarén (previously abandoned by their population) and finally, reaches the city of Simancas (near modern-day Valladolid), where Christian forces under King Ramiro II wait for him. After three days, Ramiro defeats the Moorish army with an alliance of Castile and Navarre. Abd-al-Rahman orders a retreat along the Duero River, and is almost killed,^[19] due, most likely, to treason by Arab elements in the Moorish army.
• August 1 – Battle of Trans-la-Forêt: Bretons defeat Viking occupiers.
• August 5 – Battle of Alhandic: Abd-al-Rahman III defeats the garrison of those loyal to Ramiro II at Zamora, in the context of the Spanish Reconquista.
• October 2 – Battle of Andernach: Otto I crushes a rebellion against his rule, by a coalition of Eberhard III, duke of Franconia, and other Frankish dukes, in Andernach on the Rhine River. Otto prevails, with support from Odo of Wetterau. Eberhard is killed while Gilbert, duke of Lotharingia (or Lorraine) drowns when trying to escape.

England

• October 27 – King Æthelstan dies at Gloucester after a 15-year reign. He is buried at Malmesbury Abbey and succeeded by his half-brother, Edmund I ("the Magnificent"). After Æthelstan's death Olaf Guthfrithson (or his cousin, Anlaf Cuaran^[20]) a Viking leader who rules Dublin, is proclaimed king of York (south of Northumbria).

Asia

• Taira no Masakado, a Japanese nobleman, leads one of the largest insurgent forces in the Heian period against the imperial court at Kyoto.^[21] Masakado has acquired enough power to govern the Kantō region (northwest of Edo) and calls himself the 'new emperor' (shinnō).
• Ngô Quyền, who the previous year defeated the Chinese at the Battle of Bạch Đằng (938) thereby regaining Vietnamese independence after 1000 years, becomes king of Vietnam.^[22]

Religion

• July 13 – Pope Leo VII dies at Rome after a 3½-year reign. He is succeeded by Stephen VIII as the 127th pope of the Catholic Church.
• The Major Occultation (or Al-Ghaybah al-Kubra) of Muhammad al-Mahdi occurs (approximate date).