The older, traditional industries of Wallonia, particularly steel industry, began to lose their competitive edge during this period, but the general growth of world prosperity masked this deterioration until the 1973 and 1979 oil price shocks and resultant shifts in international demand sent the economy into a period of prolonged recession. In the 1980s and 1990s, the economic center of the country continued to shift northwards to Flanders with investments by multinationals (Automotive industry, Chemical industry) and a growing local Industrial agriculture (textiles, food).