Middle Ages
Treaty of Alfred and Guthrum and the Danelaw (c. 886)
A boundary and legal settlement between Alfred's English kingdom and Guthrum's Danish kingdom of East Anglia; the regions under Scandinavian rule later became known as the Danelaw.
Region
Europe
Middle Ages
Anglo-Saxon Chronicle (c. 890): England's Year-by-Year History
A set of related annals in Old English, surviving in seven main manuscripts, that became the most important narrative source for English history from the 9th to the 11th century.
Middle Ages
Simeon I the Great: The Golden Age of the First Bulgarian Empire
Simeon made Bulgaria the leading power of the Balkans and a centre of Slavonic culture, and claimed the title of emperor.
Middle Ages
Hungarian Conquest of the Carpathian Basin (c. 895): Árpád
The Magyar tribal confederation settled the Carpathian Basin, which became the core of the later Kingdom of Hungary.
Middle Ages
Cadaver Synod (897): Pope Formosus Put on Trial After Death
Formosus was posthumously condemned and his acts annulled; within months Stephen VI was deposed and killed, and later popes reversed the verdict and banned trials of the dead.
Middle Ages
Gokstad Ship (c. 900): Viking Longship from a Norwegian Mound
The best-preserved seagoing Viking ship yet found, excavated in 1880 and displayed in Oslo; a replica sailed across the Atlantic to Chicago in 1893.
Middle Ages
Founding of Cluny Abbey (910): Medieval Monastic Reform
A Benedictine abbey placed under papal protection and free of lay control, which became the head of the largest monastic network of the medieval West.
Middle Ages
Æthelflæd, Lady of the Mercians (911–918): Warrior Ruler
Æthelflæd secured English Mercia, recovered Derby and Leicester from the Danes and prepared the way for the unification of England.
Middle Ages
Rollo and the Founding of Normandy (911): Saint-Clair-sur-Epte
Charles the Simple granted Rollo and his Vikings the lands of the lower Seine around Rouen in return for defending the kingdom and accepting baptism, creating the territory that grew into the duchy of Normandy.
Middle Ages
Ibn Fadlan's Journey to the Volga (921): Meeting the Rus
The embassy reached the Volga Bulgar ruler in May 922; Ibn Fadlan's report became one of the most important written sources on the peoples of the steppe and the Rus.
Middle Ages
Athelstan Becomes the First King of England (927)
Athelstan took York, ending the Viking kingdom there for a time, and was recognised as overlord by the rulers of northern Britain.
Middle Ages
Rila Monastery: Bulgaria's Medieval Spiritual Centre
The monastery became Bulgaria's most important religious and cultural centre and a UNESCO World Heritage Site in 1983.