With the emergence of “new Protectionism” and the resurrection of international political economy as a legitimate field of international relations, international trade and trade relations have, once again, become the focal points of political science inquiries. Given its varied intellectual attractions, the central theme of international trade remains constant: What are the causes of trade relations? Specifically, what factors determine a flow of commodities from country A to country B? There are basically two major types of answers to this question.