How the States Got Their Shapes (2010)

S1E3 Force of Nature

What role did monumental geological events play in forming the American landscape? Long before the nation's architects sketched the borders, nature herself sculpted various states. Discover how an asteroid defined the boundaries for three states and impacted the course of history. Explore the effects of glaciers carving out the Great Plains and the ongoing transformations brought about by natural disasters, which continue to reshape the map of America today.