Your posting inspired me to read a bit about Greenland history this afternoon, which I found interesting (admitting I was unable to finish reading Jared Diamond’s “Collapse” as the description of Norse settlements history in Greenland, just made me too, too sad).
But good ol’ Wikipedia has a very readable and informative article.
I remembered an old saying from my student days, “Greenland isn’t green and Iceland isn’t ice.“
Most of the successful long term settlers in Greenland were from Inuit and other similar cultures.
Anyway, it was an interesting topic to read about today. I cannot say my brief investigation leads me to think Greenland was successfully farmed, though animal husbandry was important.
Climate fluctuations corresponding to human events: