There is history stating that the Royal Families of Europe used Frislandt Island as a Royals only Kingdom from which they planned and ruled.
Greenland would be a military advantage if war came to be. Not with Denmark or the European Royals or Russia or China et al, but with what ever it is that lives on those 4 huge land masses at the so-called North Pole. With whatever it is that has you brainwashing yourself, eating the poison, and killing other humans.-cao. If you say it is my opinion you are a woke libtard.