The volume of trade worldwide has increased as various trade barriers have been removed over time. Tariffs are one of the trade barriers that trading countries have made efforts to reduce. Tariff rates are determined based on the category that trade partners belong to. There are six possible categories for classifying trade partners: General, Temporary, World Trade Organization (WTO), Generalized System of Preferences (GSP), Least Developed Country (LDC) and Economic Partnership Agreement (EPA)...