Exciting factlets o' the day
I saw this on Wikipedia the other day:
"During the Cold War, the United States developed a geopolitical interest in Greenland, and in 1946 the United States offered to buy Greenland from Denmark for $100,000,000, but Denmark refused to sell".
Via the miracle of the Measuringworth calculator, that equates to anything from $874,862,903.23 (GDP deflator) to $6,499,279,927.99 (relative gdp).
By contrast, Alaska went for $7.2m back in 1867, or a price ranging from $95,627,209.94 to $12,462,059,710.40. Going further back, the bargain that was the Louisiana Purchase was $15m in 1803, or anything from $274,488,136.46 to $448,977,772,987.67.
Comparing areas we have 828,000 sq miles for Louisiana, 663,268 sq miles for Alaska and 836,109 sq miles for Greenland, so based on the low-balled current value, Louisiana went for $331.5 per square mile, Alaska for $144.2 per square mile and Greenland would have gone for a rather impressive $1046.35. Running with the high-end values, Louisiana comes out on top at $542,243.70 per sq mile, followed by Alaska at $18,788.88 and Greenland at the bottom of the heap at $7,773.24.
Should Uncle Sam fancy putting in another bid, the Danish national debt is in the regiuon of $24 billion at the moment.
I would have a look at the Gadsen Purchase too, but life is too short.