There has additionally:r been worry that worldwide exchange could work against the interests of agricultural nations. Persuasive investigations distributed in 1950 by the Argentine business analyst Raul F'rebischlEi] and the British nancial specialist Hans Singer[22] recommended that there is an inclination at the costs of farming items to fall comparative with the costs of fabricated products; turning the terms of exchange against the non-industriai nations and delivering an accidental exchange of abundance from them to the created nations