What happened to Northern Schleswig (Sønderjylland) in 1920?

Answer and explanation

Correct answer: B. it returned to Denmark after a plebiscite

  1. Step 1: After the First World War, the peace treaty allowed votes in the area. Step 2. The northern zone voted for Denmark and was reunited with it in 1920. Answer: it returned to Denmark. Why not the others: The other outcomes did not occur.

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