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...

Economists often argue that the level and structure of a country's trade barriers and the quality of its governance policies (for example, regulating foreign investment or limiting commercial activity with red tape) have a major influence on its economic growth and performance. One problem...

In the mid-1950s sub-Saharan Africa accounted for 3.1 percent of global exports. By 1990 this share had fallen to 1.2 percent. The authors of this report find that Africa's extensive loss of competitiveness played a key role in its decline in world trade. If Africa had merely retained its...