Answer:
Devido à sua grande extensão, de norte a sul do globo e as formas de relevo com grandes altitudes, como a Cordilheira dos Andes e os Montes Apalaches, por exemplo.
Explanation:
I think it's erosion. If we're talking about geology.
The Volga is the longest river in Europe. It is also Europe's largest river in terms of discharge and drainage basin. The river flows through central Russia and into the Caspian Sea, and is widely regarded as the national river of Russia.