Here is the question :
WHAT IS THE LONGEST RIVER IN THE UNITED STATES?
Here is the option for the question :
- Mississippi River
- Rio Grande
- Missouri River
- Yukon River
And, the answer for the the question is :
[STC003521] The Missouri River is the longest river in the United States, with a total length of 2,341 miles (3,767 kilometers). This waterway starts in the Rocky Mountains of Montana, and flows across the United States until it meets the Mississippi River (which is a full 139 miles shorter than the Missouri River) in St. Louis. The Missouri River has been of critical importance to the people of North America for a very long time. During the 19th century, it played an important role in the process of westward expansion in the United States.