Free Trade Area
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A Free Trade Area is a region in which obstacles to unrestricted trade have been reduced to a minimum.
Within an industrialized country there are usually few if any significant barriers to the easy exchange of goods and services between parts of that country. For example, there are usually no trade tariffs or import quotas; there are usually no delays as goods pass from one part of the country to another (other than those that distance imposes); there are usually no differences of taxation and regulation.
Between countries on the other hand many of these barriers to the easy exchange of goods often can and do occur. It is commonplace for there to be import duties of one kind or another (as goods enter a country) and the levels of sales tax and regulation often vary by country.
The aim of a free trade area is to so reduce barriers to easy exchange that trade can grow as a result of specialisation, division of labour, and most importantly via (the theory and practice of) comparative advantage. The theory of comparative advantage argues that in an unrestricted marketplace (in equilibrium) each source of production will tend to specialize in that activity where it has comparative (rather than absolute) advantage. The theory argues that the net result will be an increase in income and ultimately wealth and well-being for everyone in the free trade area. However the theory refers only to aggregate wealth and says nothing about the distribution of wealth. In fact there may be significant losers, in particular among the recently protected industries with a comparative disadvantage. The proponent of free trade can, however, retort that the gains of the gainers exceed the losses of the losers.