A. Mississippi
B. Amazon
C. Yangtze
D. Danube
Explanation:
The Danube was once a long-standing frontier of the Roman Empire and today is the river running through the largest number of countries in the world (10; the Nile is second with 9).
A. Mississippi
B. Amazon
C. Yangtze
D. Danube
Explanation:
The Danube was once a long-standing frontier of the Roman Empire and today is the river running through the largest number of countries in the world (10; the Nile is second with 9).