International trade means the exchange of goods and services across national borders. In most countries, it represents a significant part of GPD. While international trade has been present throughout much of history (see Silk Road, Amber Road), its economic, social, and political importance have increased in recent centuries, mainly because of Industrialisation, advanced transportation, globalisation, multinational corporations, and outsourcing. In fact, it is probably the increasing prevalence of international trade that is usually meant by the term "globalisation".
Empirical evidence for the success of trade can be seen in the contrast between countries such as South Korea, which adopted a policy of export-oriented industrialisation, and India, which historically had a more closed policy (although it has begun to open its economy, as of 2005). South Korea has done much better by economic criteria than India over the past fifty years, though its success also has to do with effective state institutions.
Trade sanctions against a specific country are sometimes imposed, in order to punish that country for some action. An embargo, a severe form of externally imposed isolation, is a blockade of all trade by one country on another. For example, the United States has had an embargo against Cuba for over 50years.
Although there are usually few trade restrictions within countries, international trade is usually regulated by governmental quotas and restrictions, and often taxed by tariffs. Tariffs are usually on imports, but sometimes countries may impose export tariffs or subsidies. All of these are called trade barriers. If a government removes all trade barriers, a condition of free trade exists. A government that implements a protectionist policy establishes trade barriers.
The fair trade movement, also known as the trade justice movement, promotes the use of labour, environmental and social standards for the production of commodities, particularly those exported from the Third and Second Worlds to the First World. Such ideas have also sparked a debate on whether trade itself should be codified as a human right.
Standards may be voluntarily adhered to by importing firms, or enforced by governments through a combination of employment and commercial law. Proposed and practiced fair trade policies vary widely, ranging from the commonly adhered to prohibition of goods made using slave labour to minimum price support schemes such as those for coffee in the 1980s. Non-governmental organizations also play a role in promoting fair trade standards by serving as independent monitors of compliance with fairtrade labelling requirements