Map: Which countries e-mail each other and why

If you zoom in, you’ll notice the United States, for instance, falls closest to Israel, Switzerland and Italy. China logically falls closer to Japan and Thailand.

To this point, of course, the study amounts to little more than very interesting trivia. The real conclusion comes toward the end, when the researchers posit it as possible evidence for Samuel Huntington’s controversial “Clash of Civilizations” theory.

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