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spec: For example , a new medicine that is very effective against malaria would indeed be of value to the military . Castile 's economy remained a rural one stressing the export of raw materials : above all , wool , but also leather , wax , honey , wine , and olive oil . The Arabs had to change too , fundamentally , just as Lewis ( and Ataturk ) had said . But an interesting thing is that although both industrial and developing economies did face financial crises of various sorts in the ' 70s and ' 80s , in the 1990s , it looks like developing countries have , to a greater extent , started exerting a monopoly on these sorts of crises . When Portugal joined the European Union in January 1986 , it soon came to appreciate the benefits of belonging to a wider integrated market , as its economy received a healthy shot in the arm . The conference serves as a liaison with other national and regional educational bodies on behalf of the institutional members . In September 1985 , the Mexican economy suffered an additional setback when earthquakes severely damaged the capital , killing and injuring thousands . It ' s always on . Because of their penchant for seeing social movements and revolutions as separate genres , each with its own immutable laws , students of contention have not yet begun to explore these parallels and intersections between movements , protest cycles and revolutions ( but see Goldstone 1994 ) .