Brian: Water holds all the answers in Nevada, even how the state got its shape. Nevada is only on the Colorado River because Arizona picked the wrong side in the civil war - and then saw that river become a lake to water California's vegetables. This just shows how fluid our borders can be. These blue squiggles and dots on our map - America's waterways - where they are tells the story of why Georgia wants Tennessee's water, how Maine came to look like this and why Nevada is on the Colorado River. Read between these blue lines and you discover how America came to be ... and who we are today.