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
Partition of Belgium invasions, as the upper class language, not only at the court but also in the administration and in the political circles. Antagonism between speakers of French and Dutch increased after the independence of Belgium in 1830, when residents of the Southern Netherlands rebelled against the newfound hegemony of the northern provinces of the United Kingdom of the Netherlands. Major European powers were divided in opinion over the fallout of the revolution. Ultimately, the state of Belgium, composed of provinces of both French-speaking and Dutch-speaking people, gained independence as a buffer state between France and the Netherlands. French became the sole