This view became popular for the first time in 1817 by the economist David Ricardo in his book On the Principles of Political Economy and Taxation. He argued that free trade broadens diversity and reduces the prices of goods available in a nation, while making a better part of its own resources, knowledge and specialized skills. At the international level, there are two free trade access databases that have been developed by international organizations for policy makers and businesses: a free trade agreement is a pact between two or more nations to remove barriers to imports and exports between them. Under a free trade policy, goods and services can be bought and sold across international borders without government tariffs, quotas, subsidies or bans. Few issues divide economists and the scope of public opinion as much as free trade. Studies show that economists at U.S. university faculties are seven times more likely to support a free trade policy than the general public. In fact, the American economist Milton Friedman said: “The economic profession was almost unanimous on the question of the desire for free trade.” All these agreements still do not collectively add up to free trade in its form of free trade. Bitter interest groups have successfully imposed trade restrictions on hundreds of imports, including steel, sugar, automobiles, milk, tuna, beef and denim. First, the parties that signed a free trade area applicable to trade with non-parties to that free trade area at the time of the creation of that free trade area must not be higher or more restrictive than tariffs and other rules applicable in the same signatory countries prior to the creation of the free trade area. In other words, the creation of a free trade area to give preferential treatment to their members is legitimate under WTO law, but parties to a free trade area are not allowed to treat non-parties less favourably than before the creation of the territory.
A second requirement under Article XXIV is that tariffs and other trade barriers must be eliminated primarily for all trade within the free trade area.  Since WTO members are required to communicate their free trade agreements to the secretariat, this database is based on the official source of information on free trade agreements (called the WTO-language regional trade agreement). The database allows users to obtain information on trade agreements that are communicated to the WTO by country or theme (goods, services or goods and services). This database provides users with an up-to-date list of all existing agreements, but those that are not notified to the WTO may be lacking. In addition, reports, tables and graphs containing statistics on these agreements, including preferential tariff analysis, are presented.  In principle, free trade at the international level is no different from trade between neighbours, cities or states. However, it allows companies in each country to focus on the production and sale of goods that make the best use of their resources, while others import goods that are scarce or unavailable domesticly. This mix of local production and foreign trade allows economies to grow faster and, at the same time, better meet the needs of their consumers.
Free trade policy has not been as popular with the general public. Key issues include unfair competition from countries where lower labour costs are reducing prices and the loss of well-paying jobs for producers abroad. The creation of free trade zones is seen as an exception to the most privileged principle of the World Trade Organization (WTO), since the preferences of the parties to the exclusive granting of a free trade area go beyond their accession obligations.  Although GATT Article XXIV authorizes WTO members to establish free trade zones or to conclude