Which river runs along the eastern border of Nebraska?

The Missouri River is indeed the river that runs along the eastern border of Nebraska. This river serves as a natural boundary between Nebraska and the states of Iowa and South Dakota. It plays a crucial role in the geography and history of the region, being one of the longest rivers in North America and a key waterway for trade and transportation.

The Platte River, while significant in Nebraska, flows through the state but does not form its eastern border. The Nebraska River is not a recognized waterway, and the Yellowstone River is located primarily in Montana and does not touch Nebraska. Understanding the geography of Nebraska and the importance of the Missouri River helps clarify its vital role in the state's development and relationship with neighboring states.