Why do you think Trump wants Greenland?
I’ve heard it suggested* it’s because Greenland is huge on Mercator Projection maps and because Trump is obsessed with having the yugest things, he wants it.
Spoiler alert: Greenland isn’t nearly as big as it looks like in the Mercator Projection. The map is based on raw latitude and longitude lines, and the distorted perspective makes stuff near the Equator looks smaller than they really are compared to things near the Poles, which look larger than they really are.
*–It was probably a joke, but as dumb as Trump is I couldn’t completely rule it out either.