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How a Random Coastline Can Change Election Results

This one might be a little difficult to understand if you don't actually look at the maps in depth. Even then, it seems a little far fetched. However, as you can see, it's actually pretty interesting. There was once a coastline in Georgie (100 million years ago) that resulted in fertile soil which resulted in different farm sizes which resulted in slave populations which resulted in larger black populations which resulted in a strip of land with different election results.

mapcentral

The majority of Georgia votes red, but this small portion of land in the middle with the higher African-American population causes it to be more blue.