As you reread, restate the main and secondary ideas. Classify them one after the other, according to the order in which they appear in the text.  Ancient Norwegians came to America around the year 1000, as recounted in the Sagas and confirmed by archaeology since the discovery of a Viking site at L'Anse aux Meadows in northern Newfoundland, now a National Historic Site, and now by the discovery of other sites, such as Pointe Rosée, south of Newfoundland, which suggests that this Viking presence in America actually lasted several hundred years. These Vikings were in fact Icelanders, i.e. Norwegians mixed with indigenous Celtic populations, who over time came to share a common tree cult (Yggdrasil, which crosses the nine worlds), before being completely Christianized by the 11th century. When the southern Mediterranean trade route was blocked by the emergence of the Arab-Muslim world, and a climatic upturn warmed the Arctic for a few decades, they took to the sea and followed the vestrvegr, the western trade route, arriving at random by storm as far as Greenland, the “green land” whose etymology is disputed. Led by Eirίkr the Red (the redhead), banished from Iceland, they founded colonies to the east, eystribygđ, and to the west, vestribygđ, which lasted until the 16th and 14th centuries respectively. From there, they set off ever further west, exploring what they called the όbygđir, the “uninhabited territory”, where they actually encountered Inuit with whom they traded peacefully for centuries, exchanging walrus tusk ivory for metal objects, wood for whale oil or skins for knives, anticipating the great transatlantic trade of the seventeenth century.

As you reread, restate the main and secondary ideas. Classify them one after the other, according to the order in which they appear in the text. 

Ancient Norwegians came to America around the year 1000, as recounted in the Sagas and confirmed by archaeology since the discovery of a Viking site at L'Anse aux Meadows in northern Newfoundland, now a National Historic Site, and now by the discovery of other sites, such as Pointe Rosée, south of Newfoundland, which suggests that this Viking presence in America actually lasted several hundred years. These Vikings were in fact Icelanders, i.e. Norwegians mixed with indigenous Celtic populations, who over time came to share a common tree cult (Yggdrasil, which crosses the nine worlds), before being completely Christianized by the 11th century. When the southern Mediterranean trade route was blocked by the emergence of the Arab-Muslim world, and a climatic upturn warmed the Arctic for a few decades, they took to the sea and followed the vestrvegr, the western trade route, arriving at random by storm as far as Greenland, the “green land” whose etymology is disputed. Led by Eirίkr the Red (the redhead), banished from Iceland, they founded colonies to the east, eystribygđ, and to the west, vestribygđ, which lasted until the 16th and 14th centuries respectively. From there, they set off ever further west, exploring what they called the όbygđir, the “uninhabited territory”, where they actually encountered Inuit with whom they traded peacefully for centuries, exchanging walrus tusk ivory for metal objects, wood for whale oil or skins for knives, anticipating the great transatlantic trade of the seventeenth century.