A theory developed by Colin Clark in 1940 states that economic development has to proceed in a distinct sequence including ``development first of agriculture , then of industry and finally of services (Labini , 2001 , p . 98 . Using this theory , one can state that underdeveloped nations are still in the first stage where their output mostly depends on agricultural goods . This , for instance , is the case in the above-mentioned area of north-eastern Brazilian provinces that depend almost exclusively on sugar production (Taylor...











SUBJECTS

