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

The two longest rivers in the United States are the Missouri River and the Mississippi River. The Missouri River stretches approximately 2,341 miles, making it the longest river in the U.S., while the Mississippi River follows closely behind at about 2,340 miles. These rivers are significant not only because of their lengths but also due to their historical, environmental, and economic importance in the United States. They traverse large portions of the country and have served as critical waterways for transportation, commerce, and natural ecosystems. Identifying these two rivers as the correct answer reflects an understanding of geographical features in the U.S. and their relevance to American history and development.