Complex sentence: For example, in France this has long been considered a major issue, and the Académie française is concerned, not only with the use of anglicisms, but the maintenance of the French language, in an explicitly conservative way.
Split into simpler sentences: For example, in France this has long been considered a major issue. The Académie française is concerned, not only with the use of anglicisms, but the general maintenance of the French language, in an explicitly conservative way.