Q. 121 / 128Integrated Civics → Geography
What is the longest river in the United States?
OFFICIAL ANSWER
- Missouri (River)
- Mississippi (River)
Hear the answer · spoken at official pace0:03
Context
The Missouri flows from Montana through the Great Plains to join the Mississippi north of St. Louis. Together, the Missouri-Mississippi river system forms the fourth-longest river system in the world and was crucial to westward expansion, Indigenous trade networks, and American agriculture. The similar lengths have made both answers officially acceptable.
Want to actually remember this?
Add it to your spaced-repetition deck and review it again at exactly the right moment.