Free trade advanced further in the late 20th century and early 2000s:

• 1992 European Union lifted barriers to internal trade in goods and labour.
• January 1, 1994 the North American Free Trade Agreement (NAFTA) took effect
• 1994 The GATT Marrakech Agreement specified formation of the WTO.
• January 1, 1995 World Trade Organization was created to facilitate free trade, by mandating mutual most favoured nation trading status between all signatories.
• EC was transformed into the European Union, which accomplished the Economic and Monnetary Union (EMU) in 2002, through introducing the Euro, and creating this way a real single market between 13 member states as of January 1, 2007.
• 2005, the Central American Free Trade Agreement was signed; It includes the United States and the Dominican Republic.

Protectionism

Protectionism is the policy of restraining and discouraging trade between states and contrasts with the policy of free trade. This policy often takes of form of tariffs and restricitive quotas. Protectionist policies were perticularly prevelent in the 1930s, between the great depression and the onset of World War II.

Religion

Muslim teachings encourage trading (and condemn usury).

Judeo-Christian teachings encourage traders to avoid dishonest gain.

Development of money

The first instances of money were objects with intrinsic value. This is called commodity money and includes any commonly available commodity that has intrinsic value; historical examples include pigs, rare seashells, whale's teeth, and (often) cattle. In medieval Iraq, bread was used as an early form of money. In Mexico under Montezuma cocoa beans were money.

Currency was introduced as a standardised money to facilitate a wider exchange of goods and services. This first stage of currency, where metals were used to represent stored value, and symbols to represent commodities, formed the basis of trade in the Fertile Crescent for over 1500 years.

Numismatists have examples of coins from the earliest large-scale societies, although these were initially unmarked lumps of precious metal.

Ancient Sparta minted coins from iron to discourage its citizens from engaging in foreign trade.

Current trends

Doha rounds

The Doha round of World Trade Organization negotiations aims to lower barriers to trade around the world, with a focus on making trade fairer for developing countries. Talks have been hung over a divide between the rich developed countries, represented by the G20, and the major developing countries. Agricultural subsidies are the most significant issue upon which agreement has been hardest to negotiate. By contrast, there was much agreement on trade facilitation and capacity building.

The Doha round began in Doha, Qatar, and negotiations have subsequently continued in: Cancún, Mexico; Geneva, Switzerland; and Paris, France and Hong Kong.

China

Beginning around 1978, the government of the People's Republic of China (PRC) began an experiment in economic reform. In contrast to the previous Soviet-style centrally planned economy, the new measures progressively relaxed restrictions on farming, agricultural distribution and, several years later, urban enterprises and labor. The more market-oriented approach reduced inefficiencies and stimulated private investment, particularly by farmers, that led to increased productivity and output. One feature was the establishment of four (later five) Special Economic Zones located along the South-east coast.

The reforms proved spectacularly successful in terms of increased output, variety, quality, price and demand. In real terms, the economy doubled in size between 1978 and 1986, doubled again by 1994, and again by 2003. On a real per capita basis, doubling from the 1978 base took place in 1987, 1996 and 2006. By 2008, the economy was 16.7 times the size it was in 1978, and 12.1 times its previous per capita levels. International trade progressed even more rapidly, doubling on average every 4.5 years. Total two-way trade in January 1998 exceeded that for all of 1978; in the first quarter of 2009, trade exceeded the full-year 1998 level. In 2008, China's two-way trade totaled US$2.56 trillion.

In 1991 the PRC joined the Asia-Pacific Economic Cooperation group, a trade-promotion forum. In 2001, it also joined the World Trade Organization. See also: Economy of the People's Republic of China.

International trade

International trade is the exchange of goods and services across national borders. In most countries, it represents a significant part of GDP. 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 Industrialization, advanced transportation, globalization, multinational corporations, and outsourcing. In fact, it is probably the increasing prevalence of international trade that is usually meant by the term "globalization".

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 industrialization, 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

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 40 years.

Trade barriers

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.

Fair trade

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.

Importing firms voluntarily adhere to fair trade standards or governments may enforce them through a combination of employment and commercial law. Proposed and practiced fair trade policies vary widely, ranging from the common 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 fair trade labeling requirements.