Mississippi River
From UnAnything Wiki
The Mississippi River (also known as the Muddy Mississippi) is a river in UnAmerica. It is pretty big and practically divides the country into two. Being the first to do something west of the Mississippi is a source of great pride for some people, such as Saint Louis University, WEW AM, and the Old Cathedral.
UnAmerican author Mark Twain sailed up and down it a lot. Canadian singer Grimes tried to do the same once, but she got arrested.