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.
Balearic Islands
Both Catalan and Spanish are official languages in the islands. Catalan is designated as a "llengua pròpia", literally "own language" in its statute of autonomy. The Balearic dialect features several differences from standard Catalan. Practically all residents of the Balearic Islands speak Spanish fluently. In 2003 74.6% of the Islands' residents also knew how to speak Catalan and 93.1% could understand it. Other languages, such as English, German, French and Italian, are often spoken by locals, especially those who work in the tourism industry.