This document provides an outline for a chapter that discusses international trade and factor mobility theory. It begins with an opening case study on Costa Rica's economic transformation through international trade and foreign investment policies. The chapter then covers various trade theories including mercantilism, absolute advantage, comparative advantage, and theories explaining trade patterns based on country size, factor proportions, and country similarity. It also discusses how the location of production shifts over the product lifecycle and how national competitive advantages can develop and change. In concluding, the chapter discusses the relationship between international trade and the mobility of production factors like labor and capital.