I am sure this person then also takes the reasonable position of beliving that only an official referendum can show that Greenland does want to join the us because all media is fake news, ...right?
Closer to 9000. You number math's out to there being more people in my graduating class than currently living in Greenland. I didn't grow up in that big a town.
Greenlanders are at least 30% smarter than my fellow Americans. Congratulations and I hope to see you all in August (for a previously planned vacation, not a hostile takeover lol)
Only with guerrilla tactics against the US army, like Vietnam or the Taliban. They would still be occupied. No army in the world can stop a US offensive. They invested a lot in order to make it so. Fighting the US on a conventional war style is suicide.
The real pain to the US would come in the form of trade sanctions and loss of military allies in the EU and elsewhere in the democratic world. It would take a few years, because the EU and the US are pretty interconnected. Nato would probably be dead in the water.
After that it's speculation that US enemies would seize the opportunity of their isolation. The lack of trade would severely impact revenues and Americans would be in for the wildest depression of US history, with a likely forecast of IRA style civil war between Democrats and Republicans. If Greenlanders kept at it, they would eventually take the region back.
The US isn't a dictatorship, it's a democracy. Democracies don't usually fare well on offensive land grab wars for very long. So the US would either let go of Greenland with a new, sane president or become a dictatorship eventually. Lots of ifs in this scenario but taking Greenland would cause a lot of hurt for the US undoubtedly.
I'm not sure, that this is buttlucking, but much more of showing publicly what the people actually want, because Trump would describe his possible invasion as liberation of those poor people - put maybe he still will do that, as there are seemingly 6% idiots