We discuss three models from the literature in which transportation costs play a critical role in evaluating international economic integration. One considers costs on intra-bloc trade, one those of extra-bloc trade, and one the relativity of the two. We then examine estimates of the actual...

Perhaps the major accomplishment of the Uruguay Round is agreements reached on nontariff barriers (NTBs). All NTBs imposed under the Multifiber Arrangement (MFA) will be phased out over 10 years, and all"voluntary"export restraints will be abolished. OECD countries'NTBs on agricultural goods...

OECD barriers did not play a significant role in sub-Saharan Africa's declining position in world trade over the last three decades. The detrimental effects of the African countries'own policies, such as those that influence international transport costs, were considerably more important....

From the mid-1950s to 1990, sub-Saharan Africa's share of global exports fell from 3.1 to under 1.2 percent, a decline that implies associated export earning losses of about $65 billion annually. Previous studies show that foreign trade barriers do not account for this poor performance. Indeed,...