Languages of Catalonia
The main cause of Spanish and Catalan social bilingualism in modern Catalonia was large-scale migration from the rest of Spain during the 20th century, as Catalonia started a significant industrialization which demanded an increased workforce from elsewhere. Spanish has historically been spoken among a minority of civil servants born in other regions in Spain and among segments of the wealthiest bourgeoisie. Spanish has also been spoken as a second language by most Catalans, as it has been the only official language over long periods since the eighteenth century.
Northern Catalonia
French is the only official language in France as a whole and in these municipalities. Catalan, in its Northern Catalan variety, is recognized as a regional language only by the region of Languedoc-Roussillon; it then benefits from cultural support in education and in public medias, with some more regional power since the laws of regionalisation of France during the 1980s. It is estimated to be spoken by a 33% of the population, but understood by 49%.