I want to know the answer to the following question:
What year was it restituted to France?
All the background I'm provided with is that "It is doubtful whether a referendum in Strasbourg would have ended in France's favour since the political parties striving for an autonomous Alsace or a connection to France accounted only for a small proportion of votes in the last Reichstag as well as in the local elections.". Is that enough to answer the question?