How the States Got Their Shapes

A River Runs Through It (1x1)

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How has water has literally shaped the States? There's surprising history hidden in the blue, squiggly lines on the map. Did the founding fathers make a mistake along the Georgia Tennessee border? Can that boundary actually change because of water? Why does Maine have so much water? Why was Nevada was left high and dry? -- All these answers can be found in the unique shapes of these states.