- August 8, 870 : Redistribution of the Franconian Empire : Lotharingia , the Middle Kingdom, is divided up between West and East France in the Treaty of Meerssen after the death of the childless Lothar II .
- 872 : Harald I defeats the Norwegian petty kings and establishes a great kingship .
- 874 : Iceland began to be settled from Norway .
- 875 : The Viking Gunnbjörn Úlfsson discovers Greenland .
- 878 : King Alfred conquers London from the Danes (see: Danelag ).
- 879 : The Varangian Oleg takes over the rule in Novgorod, conquers Kiev and becomes the first Grand Duke of Kiev .