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 Academy of Science, Letters and Fine Arts of Belgium an independent solely Dutch-speaking Flemish academy while the Royal Academy of Belgium remained a bilingual institution hosting members both from the north and from the south of the country. The bilingual status of the Royal Academy however caused difficulties over the course of the years which ultimately were resolved in 1971 by splitting the Royal Academy into an independent solely Dutch-speaking entity and an independent solely French-speaking entity. The law of 1 July 1971 put both academies in linguistic equality: henceforth their own lingua franca is used (respectively the French and the Dutch) and they bear the same denomination. In