Denmark uses Greenland for fishing, it is really important for them for eating. This is basic strategic decision. Food is a priority over anything else.<p>To only talk in dollars is ridiculous. You know how much it cost food when you don't have it, like in a war? infinite. My grandfather paid a fortune in order to survive during the escape from a totalitarian country.<p>What was portrayed in the West as "Arab Spring", "fighting for freedom" was in reality people that could not buy food because it became too expensive. Prices for food went to double or triple within months as some rich bastards had stockpiled all rice and cereal surplus in to world knowing well the situation in the north of Africa months before the conflict became visible.<p>That is what happens when your country leaders could not warranty your basic needs.<p>Another thing, Greenland is part of Europe, which is industrialized and needs raw materials. Selling to the US would have meant making Europe even smaller and weaker, and making the US even stronger.<p>In Geoplolitics you don't want to make other countries so powerful that they could basically enslave you. It is called "Ballance of Power".