The oldest form of trade, with no money involved.

The oldest form of trade, with no money involved, is known as barter trade. Here are the steps explaining how it works:

1. Identification of Surplus: The first step in barter trade is identifying the surplus goods or services that you have. These are the things that you can afford to give away without affecting your own consumption or use.

2. Finding a Suitable Trading Partner: The next step is to find a person or group who needs the goods or services that you have and is willing to exchange them for something that you need.

3. Negotiation: Once a suitable trading partner is found, the next step is to negotiate the terms of the trade. This involves determining how much of each good or service is to be exchanged.

4. Exchange of Goods or Services: After the terms have been agreed upon, the final step is the actual exchange of goods or services. This is done in a manner that is mutually beneficial to both parties.

5. Satisfaction of Needs: The ultimate goal of barter trade is the satisfaction of needs. This is achieved when each party gets what they need from the trade.

This system of trade was prevalent before the invention of money and is still used in some parts of the world today. However, it has its limitations, such as the difficulty in finding a suitable trading partner and the lack of a common measure of value, which led to the development of money as a medium of exchange.