How firms react to a given shock may depend on the degree to which rivals are present and on whether potentially viable entrants to that market exist. A preferred supplier market presence and threat of entry lessen a nonmember country's price reaction to most-favored-nation trade liberalization...

Evidence from Mercosur suggests that eliminating duty drawbacks for intra-regional exports would lead to increased counterlobbying against protection of intermediate products. Without the duty drawback, the common external tariff would have been an estimated 3.5 percentage points (25 percent)...

"The paper provides a first, systematic benchmarking of infrastructure performance in the Southern African Customs Union (SACU) countries (South Africa, Botswana, Lesotho, Namibia, and Swaziland) in four major sectors-electricity, water and sanitation, information and communication technology,...