Populorum Progressio §56

⁵⁶ Efforts are being made to help the developing nations financially and technologically. Some of these efforts are considerable. Yet all these efforts will prove to be vain and useless, if their results are nullified to a large extent by the unstable trade relations between rich and poor nations. The latter will have no grounds for hope or trust if they fear that what is being given them with one hand is being taken away with the other.