What is the main conflict in The Vinland Sagas: The Norse Discovery of America ?

The Vinland Sagas are two of the classic Icelandic Sagas, but even among these special works of literature, they have a special place. They both tell the story of the Norse exploration and attempted colonization of North America, over five centuries prior to Columbus. Both sagas tell the legendary story of Eirik the Red (Erik, for the Anglicized), who was outlawed from Iceland in the tenth century, founded a colony of Icelanders in Greenland, and even suggest that he named Greenland in order to attract more settlers there.