Even Greenland usually counts as North America unless you explicitly exclude it, as the cited Wikipedia article does: "L'Anse aux Meadows is the only undisputed site of pre-Columbian trans-oceanic contact of Europeans with the Americas outside of Greenland."

But they didn't exclude Icecland! To a geologist, perhaps even parts of Iceland count as North America: https://en.wikipedia.org/wiki/Mid-Atlantic_Ridge#/media/File...

The geology is just a happy accident of naming. Continents aren't defined by plates. Europe and Asia share a plate, except for a bit of western Siberia that's on the North American plate. The Americas have 3-7 different plates, but only 1-2 continents.

Continents aren't defined by anything.

https://www.amazon.com/Myth-Continents-Critique-Metageograph...

I'm in SE Canada a region called The Maritimes and supposedly there is evidence of Vikings visiting here. I'm West of Newfoundland but also an island. But Nova Scotia and even Maine in the US may have been visited by Vikings.

> Technically Newfoundland is an island

For anyone who says this I wonder if they are consistent with how they discuss continents:

- They take care to talk about the Caribbean as something in the waters near North America but not in North America itself

- They talk about Indonesia as something that is in the waters close to Asia and Australia—no need for “Oceania” obviously

- Madagascar as an island next to Africa

And so on and so on.