Centuries: 8th century - 9th century - 10th century
- Oath of Strasbourg - alliance of Louis the German and Charles the Bald against emperor Lothar - sworn and recorded in vernacular languages.
- Ramiro I succeeds Alfonso II as king of Asturias.
- Three year old Michael III succeeds Theophilus II as emperor of Byzantium.
- Uurad is succeeded by Bred, then Kineth.
- End of the reign of caliph Moqtasim.
- Charles the Bald marries Ermentrude.