The correct option is C The Rhine river had to be opened for international sea routes.
Germany was held responsible for the First World War, and it had to pay a sum of 6.5 billion pounds as war fine. Germans were greatly humiliated by this. Ruhr, a province from Germany, was taken away. The Rhine river had to be opened for international sea routes. The dictator of Germany, Adolf Hitler, rejected the Treaty of Versailles and called it as ‘a piece of paper’. The Germans and the Italians could not forget the Treaty of Versailles. Fierce nationalism developed in Germany, Italy and Japan.