“…The problem is not so much one of removing tariffs but of creating the variety of goods necessary to enable a vigorous commerce to take place. 1 Figures for intra-African trade (on average 10 to 12 per cent of states' total external transactions) attest to the inability of African states to satisfy their neighbours' trading needs. Trade between African states is further hampered by poor communications links (which typically join the interior to the coast rather than connecting adjacent states), language barriers, and problems associated with membership in different currency arrangements.…”