The 2nd one
i just guessed but my instincts tell me it's right, and they are usually right. But if u really need help explaining, go ask a teacher or parent!! i mean i'm a singer, NOT a geologist
Volga River is the longest river in Europe.
It is also a source of hydroelectricity for many Russian cities along its basin
It is the province in the east central Canada that borders the u.s