Events relating to europe
The three-field system, introduced by the Franks, increases agricultural yield by 33%.
The Bulgarian king Boris I is baptized in the Greek Orthodox faith, bringing his people within the Byzantine fold
A great army of Danes captures York - the first step in the establishment of Danelaw in eastern England
The young Alfred leads the English in their first significant victory over the Danes, at Ashdown
Vikings arrive in Iceland and form a settlement on the site of modern Rejkjavik
Oleg, leader of the Rus, seizes the town of Kiev and makes his headquarters there
The Magyars, under the leadership of Arpad, establish themselves in Hungary

With the end of inconoclasm, the screen between the nave and the altar sanctuary becomes covered in icons in Orthodox churches
Monastic reform, begun at Cluny, is so successful that more than 1000 Benedictine houses eventually follow the Cluniac example
The Vikings settle in France, as Normans, when Rollo the Ganger is granted feudal rights over the region round Rouen
After years of raiding up the Shannon, the Vikings capture Limerick
An althing of chieftains establishes the commonwealth of Iceland, which will survive for more than three centuries
Leon forms a loose alliance with its southern neighbour, Castile, to become the most powerful unit in northern Spain
Medieval Europe's first institute of higher education is established, with the founding of the medical school at Salerno
So many Slavs are captured and sold, in the movement eastwards of the Germans, that their name becomes the European word for a slave
The material of the Eddas, taking shape in Iceland, derives from earlier sources in Norway, Britain and Burgundy
The Byzantine empire enjoys a revival, bringing the Slavs within the Greek Orthodox fold and winning victories against the Muslims
Harald Bluetooth is baptized a Christian and unites the whole of Denmark as a single kingdom.
The imperial coronation of Otto I by Pope John XII in St Peter's puts in place the formal role of a Holy Roman emperor
The Poles are first recorded as a tribal group when a German knight comes into contact with them in the region round Gniezno
Mieszko, pagan chieftain of the Poles, marries a Christian Czech princess and brings all his people into the Roman Catholic fold
The Hungarian king Gezá and his family are baptized as Roman Catholics, beginning a long link between Hungary and Rome
Brian Boru becomes king of Munster and leader of the Irish campaign against the Vikings
Hugh Capet, a Frankish noble elected king of west Francia, establishes the royal dynasty of France.
Hugh Capet is the first in an unbroken line of twelve generations on the throne of France