How the States Got Their Shapes(OAD: 05/17/2011)

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How the States Got Their Shapes : Force of Nature

(First Aired: May 17, 2011)

How an asteroid created the border for three states; how glaciers that plowed the Great Plains altered the map.

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(First Aired: May 10, 2011)

Why Chicago could have been in Wisconsin; why are states out West so big and boxy; Forgottonia.

(First Aired: May 24, 2011)

Why Montana looks like it took a bite out of Idaho; why Texas was broken up into five states; why are there two Carolinas.

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