Context: The Danube (/ ˈdænjuːb / DAN-ewb, known by various names in other languages) is Europe's second-longest river, after the Volga River. It is located in Central and Eastern Europe.\n\nQuestion: where is the danube river located in europe?
Let's think step by step.
Central and Eastern Europe
To answer the question, consider the following: It is located in Central and Eastern Europe.

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Therefore, the answer is Central and Eastern Europe