I don't think Occitan had shrinked that much before the French Revolution?
My guess is the author is assuming that everyone knows where the dominant, 'imperial' languages (English, French, German, Spanish, Russian ...) are spoken, and aims to represent the deltas from those. Either that, or it has an exaggerated anti-imperialist bias.
My guess is the author is assuming that everyone knows where the dominant, 'imperial' languages (English, French, German, Spanish, Russian ...) are spoken, and aims to represent the deltas from those. Either that, or it has an exaggerated anti-imperialist bias.