This report identifies key factors underlying the agricultural productivity growth and enhanced international competitiveness of Brazil and Argentina in the past decade. Economic and policy reforms, infrastructure development, and enhanced use of agricultural inputs that drove output growth during the 1990s are discussed. This report also compares Brazilian, Argentine, and U.S. soybean production costs and evaluates the combined impact of production, marketing, and transportation costs on the overall export competitiveness of each country's soybean producers. Finally, the outlook for continued growth in output and exports of key commodities is assessed.