Danube has a strange story. It rises from a plateau who shares its name with a cake _______________ and ends in a Sea whose name speaks of colour, not blue, ____________

These two are known as Europe's twin rivers. They originate from the same source but then get separated, as one moves northwards to meet the North Sea, the other flows southwards to fall into the Mediterranean Sea. Who are they? ___________ to the north and _______to the south.

This river valley is extremely rich in minerals and industrial development. After World War I, the Allied forces punished the Germans by taking control of this region. Which river valley I am talking about?

Identify the river marked with a red question mark.

If one needs to travel from the Baltic Sea to Caspian Sea, which river would best provide for the same?

European rivers are known for a very significant use, apart from their use in domestic needs, agriculture, industry and power generation. Which are the two uses to choose from the below options: