Imagine if all the maps and globes worldwide had to be reprinted, labeled with "GREENLAND (USA)". What kind of economic effects would this bring? This is not just a geopolitical joke; the underlying economic logic is quite interesting.

If this were actually done, the economic stimulus from redoing the entire industry chain of global maps, globes, textbooks, and navigation systems might offset the cost of land acquisition. A careful calculation suggests that the economic multiplier effect of this "map revolution" could reach the level of $700 billion — just enough to match the rumored purchase price.

Interestingly, this reflects an economic principle: large-scale geopolitical changes often trigger chain reactions of industry demand and economic activity.