What are the names of two of the longest rivers in the United States?

The Missouri River and the Mississippi River are indeed two of the longest rivers in the United States, making this answer the correct choice. The Missouri River stretches approximately 2,341 miles, making it the longest river in the country, while the Mississippi River follows closely behind at around 2,340 miles. Both rivers play significant roles in American history, geography, and transportation.

The other options contain rivers that, while notable, do not compare in length to the Missouri and Mississippi Rivers. For instance, the Rio Grande is an important river, particularly as a border between the U.S. and Mexico, but it is not among the longest. Similarly, the Ohio River, Columbia River, Colorado River, Arkansas River, and Tennessee River may have their own historical and geographical significance, but none are as lengthy as the Missouri and Mississippi.