Economy of Belgium increased unemployment, stemming from the worldwide banking crisis. For 50 years through World War II, French-speaking Wallonia was a technically advanced, industrial region, with its industry concentrated along the sillon industriel, while Dutch-speaking Flanders was predominantly agricultural with some industry, mainly processing agricultural products and textiles. This disparity began to fade during the interwar period. When Belgium emerged from World War II with its industrial infrastructure relatively undamaged thanks to the Galopin doctrine, the stage was set for a period of rapid development, particularly in Flanders. The postwar boom years, enhanced by the establishment of the European Union and NATO
Royal Flemish Academy of Belgium for Science and the Arts created and from then on until 1971 Flemish scientists were either member of the Dutch-language Flemish academy or member of the officially bilingual ARB. This situation created confusion sometimes. As a consequence of the first state reform in Belgium in 1970, the officially bilingual Royal Academy was dissolved in 1971 and replaced by a solely French-speaking academy, ARB, for the French speaking community and a solely Dutch-speaking academy, KAWLSK, for the Flemish community. Almost 30 years later on, KAWLSK was renamed KVAB ("Koninklijke Vlaamse Academie van België voor Wetenschappen en Kunsten") in 1999. Royal Flemish Academy of Belgium for Science