This document discusses free trade and protectionism in economics. It defines free trade as a policy without tariffs or other trade barriers between countries. The advantages listed include comparative cost advantage, increased factor earnings, cheaper imports, an enlarged market, competition, and greater welfare. However, the document also notes arguments against free trade such as imperfect competition and one-sided development. Protectionism is then defined as encouraging domestic industries through subsidies or tariffs on foreign goods. The document provides several economic and non-economic arguments for protectionism, such as terms of trade and infant industries, as well as defense, patriotism, and preservation of certain industries. It concludes by acknowledging some of the difficulties in assessing and implementing these policies.