How the States Got Their Shapes

Why does Oklahoma have that panhandle? Did someone make a mistake?

We are so familiar with the map of the United States that our state borders seem as much a part of nature as mountains and rivers. Even the oddities—the entire state of Maryland(!)—have become so engrained that our map might as well be a giant jigsaw puzzle designed by Divine Providence. But that's where the real mystery begins. Every edge of the familiar wooden jigsaw pieces of our childhood represents a revealing moment of history and of, well, humans drawing lines in the sand.