Jefferson River, one of the headstreams of the Missouri River. It is located in Montana and is 217 miles (349 km) long. From its source to Dillon, the river is called Red Rock Creek. From Dillon to Twin Bridges, it is called Beaverhead River. The name Jefferson River is given to the course from Twin Bridges to Three Forks, where the Jefferson, Madison, and Gallatin rivers join to form the Missouri.
America is a big ole place. Did you know that there are 50 states that constitute the U.S.? That question is about as easy as it's going to get on this quiz, so it’s time to see if your smarts go deeper.
Mississippi River, the chief river of North America and one of the largest in the world.