Hmm. I would not have believed that such possibilities could be seriously considered in the 21st century, even though that seems to have been quite common before the second half of the 20th century. USA President Trump is quoted as saying, "Essentially it’s a large real estate deal" by this article: Trump: ‘$700M’ cost of Greenland is ‘hurting Denmark very badly’, https://nypost.com/2019/08/18/trump-700m-cost-of-greenland-is-hurting-denmark-very-badly/ . The article also says that Trump said that Denmark is economically supporting Greenland, which is a semi-autonomous region under Denmark's rule, and that such economic support costs Denmark $700 million (per year, I presume). The Danish government has said that Greenland is NOT FOR SALE, and seems to have been outraged by the idea. Note that Greenland already has a USA armed forces base on it. Trump is quoted by the article as saying, "Denmark, essentially, owns it. We’re very good allies with Denmark, we pr...