Answer:
By providing dates indicating when the Norse arrives in Greenland and when they left
Explanation:
He was there temporarily so by giving the dates it shows us when he left
It means that he has abided by certain mores for his whole life and by using the literal example of “pulling a thorn”, he’s saying, “there’s not one person who i haven’t helped, that’s what makes us brothers. When they need me i help them, and when i need them they help me.” It is interesting because he’s explaining that just because it’s not normal for you doesn’t mean it’s not my version of normal.
