1. Which river is the longest in the world?

2. Which river flows through the Grand Canyon?

3. Which river forms a natural border between the United States and Mexico?

4. Which river is known as the “Mother of Rivers”?

5. Which river is the longest in Europe?

6. Which river is associated with the city of Rome?

7. Which river is the main tributary of the Amazon River?

8. Which river flows through the capital city of Paris?

9. Which river is considered holy in Hinduism?

10. Which river passes through the city of Budapest?

11. Which river is the lifeline of Egypt?

12. Which river is known as the “Yellow River”?

13. Which river forms part of the border between the United States and Canada?

14. Which river is famous for its annual flooding, enriching the surrounding farmland?

15. Which river flows through the city of London?

16. Which river is the second longest in Africa, after the Nile?

17. Which river forms part of the border between the United States and Mexico?

18. Which river is the largest in South America by discharge volume?

19. Which river flows through the Grand Canyon in the United States?

20. Which river is known as the “River of Five Colors” due to its vibrant aquatic plants?