Do Southern African Development Community countries trade enough with each other and with the rest of the world? Although its share of world trade has fallen, appropriate benchmarking shows that, controlling for gross domestic product and other characteristics, Southern African Development...

Do better international logistics reduce trade costs, raising a developing country's exports? Yes, but the magnitude of the effect depends on the country's size. The authors apply a gravity model that accounts for firm heterogeneity and multilateral resistance to a comprehensive new...