International trade is the purchase, sale, or exchange of goods and services across national borders

Mercantilism

Mercantilist analysis, which reached the peak of its influence upon European thought in the 16th and 17th centuries, focused directly upon the welfare of the nation. It insisted that the acquisition of wealth, particularly wealth in the form of gold, was of paramount importance for national policy. Mercantilists took the virtues of gold almost as an article of faith; consequently, they never sought to explain adequately why the pursuit of gold deserved such a high priority in their economic plans.

Mercantilism was based on the conviction that national interests are inevitably in conflict—that one nation can increase its trade only at the expense of other nations. Thus, governments were led to impose price and wage controls, foster national industries, promote exports of finished goods and imports of raw materials, while at the same time limiting the exports of raw materials and the imports of finished goods. The state endeavoured to provide its citizens with a monopoly of the resources and trade outlets of its colonies.

The trade policy dictated by mercantilist philosophy was accordingly simple: encourage exports, discourage imports, and take the proceeds of the resulting export surplus in gold. Mercantilists’ ideas often were intellectually shallow, and indeed their trade policy may have been little more than a rationalization of the interests of a rising merchant class that wanted wider markets—hence the emphasis on expanding exports—coupled with protection against competition in the form of imported goods.

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A typical illustration of the mercantilist spirit is the English Navigation Act of 1651, which reserved for the home country the right to trade with its colonies and prohibited the import of goods of non-European origin unless transported in ships flying the English flag. This law lingered until 1849. A similar policy was followed in France.

Liberalism

A strong reaction against mercantilist attitudes began to take shape toward the middle of the 18th century. In France, the economists known as Physiocrats demanded liberty of production and trade. In England, economist Adam Smith demonstrated in his book The Wealth of Nations (1776) the advantages of removing trade restrictions. Economists and businessmen voiced their opposition to excessively high and often prohibitive customs duties and urged the negotiation of trade agreements with foreign powers. This change in attitudes led to the signing of a number of agreements embodying the new liberal ideas about trade, among them the Anglo-French Treaty of 1786, which ended what had been an economic war between the two countries.

After Adam Smith, the basic tenets of mercantilism were no longer considered defensible. This did not, however, mean that nations abandoned all mercantilist policies. Restrictive economic policies were now justified by the claim that, up to a certain point, the government should keep foreign merchandise off the domestic market in order to shelter national production from outside competition. To this end, customs levies were introduced in increasing number, replacing outright bans on imports, which became less and less frequent.

In the middle of the 19th century, a protective customs policy effectively sheltered many national economies from outside competition. The French tariff of 1860, for example, charged extremely high rates on British products: 60 percent on pig iron; 40 to 50 percent on machinery; and 600 to 800 percent on woolen blankets. Transport costs between the two countries provided further protection.

A triumph for liberal ideas was the Anglo-French trade agreement of 1860, which provided that French protective duties were to be reduced to a maximum of 25 percent within five years, with free entry of all French products except wines into Britain. This agreement was followed by other European trade pacts.

Resurgence of protectionism

A reaction in favour of protection spread throughout the Western world in the latter part of the 19th century. Germany adopted a systematically protectionist policy and was soon followed by most other nations. Shortly after 1860, during the Civil War, the United States raised its duties sharply; the McKinley Tariff Act of 1890 was ultraprotectionist. The United Kingdom was the only country to remain faithful to the principles of free trade.

But the protectionism of the last quarter of the 19th century was mild by comparison with the mercantilist policies that had been common in the 17th century and were to be revived between the two world wars. Extensive economic liberty prevailed by 1913. Quantitative restrictions were unheard of, and customs duties were low and stable. Currencies were freely convertible into gold, which in effect was a common international money. Balance-of-payments problems were few. People who wished to settle and work in a country could go where they wished with few restrictions; they could open businesses, enter trade, or export capital freely. Equal opportunity to compete was the general rule, the sole exception being the existence of limited customs preferences between certain countries, most usually between a home country and its colonies. Trade was freer throughout the Western world in 1913 than it was in Europe in 1970.