What are the system of exchange found in modern societies? In the modern economy there has been a considerable change in the system of exchange. In the field of production, the system of exchange is also connected with efficiency and skill.
Much of what we know about the hunting-gathering societies comes from archeological findings and the study of remnant cultures in Australia, South America and Africa. From such studies, we find that people of these hunting-gathering societies lived in a world closely linked to the environment.
Over many thousands of years, human beings became increasingly dependent on cultivated crops and less and less dependent on wild varieties. The earliest agriculturists practiced subsistence level farming, which provides food only for the farmer’s family.