Watch the growth of Walmart and Sam’s Club, 1962-2010

Sometimes you just have to “see” the numbers to believe them. Walmart has to be one of the most ubiquitous big-box stores in North America. When it comes to how many retail outlets there are, there’s really no number that would surprise me. But if you translate that statistic into a cool data visualization map, I’m blown away. Check out this video from FlowingData where you can watch Walmart “spread like wild fire” across the US.

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