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RAS question

The Danube River flows through how many countries?

Correct answer: (C) 10 countries (most international of any river).

The Danube River flows through 10 countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine.

  1. (A)

    3 countries

  2. (B)

    5 countries

  3. (C)

    10 countries (most international of any river)

  4. (D)

    15 countries

Explanation

The answer is 10 countries. The Danube's route runs through Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. The ICPDR page supports the count by describing the Danube's 2,857 km journey from the Black Forest to the Black Sea and stating that, from source to mouth, it passes 10 countries. That is why option C matches the required geographical fact, not merely a rounded estimate. The Danube is also Europe's second-longest river after the Volga, making it a standard world-geography example of an international river system.

Why the other options are wrong

  • (A) Three countries is far too low because the country list alone contains Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine.
  • (B) Five countries captures only half of the route; ICPDR confirms that the Danube passes 10 countries from source to mouth.
  • (D) Fifteen countries overstates the count; the verified figure for countries through which the Danube passes is 10, not 15.

Concept

This tests the world-geography concept of international rivers and their cross-border courses. RAS repeatedly uses such facts because rivers like the Danube link physical geography with political boundaries.

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