850-999 (The Kalmar Union)

872
West Scandinavia - Harald Fairhair unites Norway at the battle of Hafrsfjord. Many Norse leave for the Norse colonies in Ireland and Man rather than submit to Harald's rule.

874
Iceland - The first Norse settlements in Iceland are founded. The island attracts many settlers fleeing Norway and the increasingly fraught Irish colony.

930
West Scandinavia - On Harald's death Norway is split between his sons and trusted nobles. Eirik Bloodaxe takes Western Norway and keeps title of high king of Norway. Olaf Geirstadalf takes Vingulmark and Vestfold Haakon is currently in England. The North is split between the Earls of More and Lade.

934 (POD)
West Scandinavia - After feuding with his brothers, Eirik Bloodaxe is defeated by Haakon and Olaf and he flees to Jorvik, consolidating his power there. Haakon I takes the West (usually centred on and generally known as Hordaland), Olaf I takes the East (usually known as Viken) and the high king of Norway title.

946
Viken - Olaf I dies. Tryggve Olafsson is crowned king of Viken (and Norway).

961
West Scandinavia - At the battle of Fitjar Haakon I is defeated and killed by Eirik's sons. The eldest brother Harald II Greycloak is (eventually) proclaimed king of Hordaland. The brothers submit to Harald Bluetooth's overlordship.

963
West Scandinavia - Harald II defeats and kills Tryggve briefly reuniting Southern Norway.

970
West Scandinavia - Tricked into going to Denmark, Harald II is killed. Harald Bluetooth takes Viken and with it the title of king of Norway. The Earl of Lade, Haakon II Sigurdsson, is given control of Hordaland.

East Scandinavia - Eric V of Svealand fails in his attempt to unite Svealand and Gothenland in the face of Danish and Viken hostility.

973
West Scandinavia - A failed attempt to free Denmark from German influence frees Haakon II from his obligations to the Danish kings.

978
Greenland - Snæbjörn Galti visits Greenland following earlier tales of a land West of Iceland.

984
Greenland - Eric the Red founds Greenland's first colony at Brattahild. News of the new colony drives many land-hungry families to Greenland. All arable land in Iceland has been claimed and it is in danger of no longer being able to support its population. Babies are being left exposed to die.

986
Leifia - While lost on the trip from Hordaland to Greenland Bjarni Herjolfsson spots another 'island' to the West.

995
West Scandinavia - Tryggve's son Olaf returns to Viken defeating the Danish army. Christianity is imposed upon Viken by Olaf II. Eirik Haakonarson is given control of Lade.

Svealand - Eric V of Svealand dies. Olof I Skotkonung succeeds him. Disputes with Sweyn Forkbeard are resolved when Sweyn marries his mother.