If you will go to the market, you will find hundreds to thousands of different items sold everyday. You can purchase raw foods such as fresh meat and fish, various household items, clothes, pairs of shoes, and other products by paying a particular amount of money. Once you have obtained the item that you want and the seller received a certain amount of money from you, both of you constituted a trade.
early civilizations
Trade translates to revenues.
The recorded history of early trade during the existence of early civilizations is through barter or the direct exchange of goods and services within an agreed rate (for instance, 4 pieces of apples can be exchanged to 3 pieces of oranges). The trade during early times is for the satisfaction of human needs, and not for any monetary value since the trade involves the direct exchange of products and without any trading medium.
