MERCANTILISM
According to Wild, 2000, the trade theory that states that nations should accumulate financial wealth, usually in the form of gold, by encouraging exports and discouraging imports is called mercantilism. According to this theory other measures of countries' well being, such as living standards or human development, are irrelevant. Mainly Great Britain, France, the Netherlands, Portugal and Spain used mercantilism during the 1500s to the late 1700s.
Mercantilistic countries practised the so-called zero-sum game, which meant that world wealth was limited and that countries only could increase their share at expense of their neighbours. The economic development was prevented when the mercantilistic countries paid the colonies little for export and charged them high price for import. The main problem with mercantilism is that all countries engaged in export but was restricted from import, another prevention from development of international trade.
ABSOLUTE ADVANTAGE
The Scottish economist Adam Smith developed the trade theory of absolute advantage in 1776. A country that has an absolute advantage produces greater output of a good or service than other countries using the same amount of resources. Smith stated that tariffs and quotas should not restrict international trade; it should be allowed to flow according to market forces. Contrary to mercantilism Smith argued that a country should concentrate on production of goods in which it holds an absolute advantage. No country would then need to produce all the goods it consumed. The theory of absolute advantage destroys the mercantilistic idea that international trade is a zero-sum game. According to the absolute advantage theory, international trade is a positive-sum game, because there are gains for both countries to an exchange. Unlike mercantilism this theory measures the nation's wealth by the living standards of its people and not by gold and silver.
There is a potential problem with absolute advantage. If there is one country that does not have an absolute advantage in the production of any product, will there still be benefit to trade, and will trade even occur? The answer may be found in the extension of absolute advantage, the theory of comparative advantage.
COMPARATIVE ADVANTAGE
The most basic concept in the whole of international trade theory is the principle of comparative advantage, first introduced by David Ricardo in 1817. It remains a major influence on much international trade policy and is therefore important in understanding the modern global economy. The principle of comparative advantage states that a country should specialise in producing and exporting those products in which is has a comparative, or relative cost, advantage compared with other countries and should import those goods in which it has a comparative disadvantage. Out of such specialisation, it is argued, will accrue greater benefit for all.
In this theory there are several assumptions that limit the real-world application. The assumption that countries are driven only by the maximisation of production and consumption, and not by issues out of concern for workers or consumers is a mistake.
HECKSCHER-OHLIN THEORY
In the early 1900s an international trade theory called factor proportions theory emerged by two Swedish economists, Eli Heckscher and Bertil Ohlin. This theory is also called the Heckscher-Ohlin theory. The Heckscher-Ohlin theory stresses that countries should produce and export goods that require resources (factors) that are abundant and import goods that require resources in short supply. This theory differs from the theories of comparative advantage and absolute advantage since these theory focuses on the productivity of the production process for a particular good. On the contrary, the Heckscher-Ohlin theory states that a country should specialise production and export using the factors that are most abundant, and thus the cheapest. Not produce, as earlier theories stated, the goods it produces most efficiently.
The Heckscher-Ohlin theory is preferred to the Ricardo theory by many economists, because it makes fewer simplifying assumptions. In 1953, Wassily Leontief published a study, where he tested the validity of the Heckscher-Ohlin theory. The study showed that the U.S was more abundant in capital compared to other countries, therefore the U.S would export capital- intensive goods and import labour-intensive goods. Leontief found out that the U.S's export was less capital intensive than import.
PRODUCT LIFE CYCLE THEORY
Raymond Vernon developed the international product life cycle theory in the 1960s. The international product life cycle theory stresses that a company will begin to export its product and later take on foreign direct investment as the product moves through its life cycle. Eventually a country's export becomes its import. Although the model is developed around the U.S, it can be generalised and applied to any of the developed and innovative markets of the world.
The product life cycle theory was developed during the 1960s and focused on the U.S since most innovations came from that market. This was an applicable theory at that time since the U.S dominated the world trade. Today, the U.S is no longer the only innovator of products in the world. Today companies design new products and modify them much quicker than before. Companies are forced to introduce the products in many different markets at the same time to gain cost benefits before its sales declines. The theory does not explain trade patterns of today.
