983 - Eric the Red began the settlement of Greenland.

Denmark
Rumors about Emperor Otto 2 defeat to the Saracens in Italy reached Denmark so the son of Harald Bluetooth, Sweyn Forkbeard threw the Germans out of Southern Schleswig. He conquered Otto 2`s castle and killed all the soldiers and burned the castle to ashes. A lot of the battles took place in the Hedeby area, and the rune stones of the fallen warriors witness this. It might be possible that it led to the destruction of Hedeby because all the trade was moved to Sliestorp(Schleswig). The campaign did not stop with the conquest of the lost land, united with the support from Harald Bluetooths brother-in-law Mistiwoi, a local leader of the Obrotrites allied with Sweyn Forkbeard conquered Holstein and burned Hamburg.

Greenland
Eric the Red began the exploration of Greenland, with him was his wife Tjodhild and his 2 sons Leiv and Thorsten. 3 years were used to explore the area in the Southern part of Greenland, he used a marketing trick and named the area Greenland, to describe the mild climate and grass field. He sailed back to Iceland where all the best pastures were  taken there was not a lack of pioneers looking to explore and settle new land.
Erik the red Thorvaldsson (950-1007) settled Greenland

Church of Hvalsø