Which of the following statements about the dynamics of world trade is most accurate? An estimated 35 percent of world trade involves countertrade. World trade is calculated to include only the exchange of money for products or services. Because of changes to NAFTA, North American intratrade is no longer counted in calculations of world trade. As the largest international trade partner, the U. S. accounts for 40 percent of world trade. China, the United States, and Germany far outpace other countries in terms of imports and exports.