The Norse in Vinland, not the Norse in Greenland. Also, the Vinland episode is several hundred years before the Norse died out in Greenland. We can also be quite sure of why they died out: They starved, excavations in Greenland have shown that the Norse resorted to eating their dogs, the final stage of starvation before death.
There's one story related in that article which indicates 3 Norwegian ships and a number of Inuits came to blows, but it also says that two of the ships left after the Norse won the battle and only then could Innuit master the third.
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