Trade

Trade is the voluntary exchange of goods, services, or both. Trade is also called commerce. A mechanism that allows trade is called a market. The original form of trade was barter, the direct exchange of goods and services. Modern traders instead generally negotiate through a medium of exchange, such as money. As a result, buying can be separated from selling, or earning. The invention of money (and later credit, paper money and non-physical money) greatly simplified and promoted trade. Trade between two traders is called bilateral trade, while trade between more than two traders is called multilateral trade.

Support for trade

• Infrastructure
• computers and Internet
• e-commerce
• Search engine
• Critical infrastructure
• Accounting
• Banking
• Insurance
• Public services
• Police protection
• Postal service
• Public utilities
• Telephone
• Fax
• Telephone directory
• Translation
• Transport
• Highways
• Railroads
• Ship transport