Why was trading nessecary in prehistoric times?

Trading in prehistoric times was necessary for several reasons, primarily to fulfill the diverse needs of early human communities. Different groups had varying resources, such as food, tools, and materials, which they could exchange to obtain what they lacked. This exchange facilitated the sharing of knowledge and cultural practices, promoting social bonds and cooperation among different tribes. Additionally, trade supported the development of more complex societies by encouraging specialization and the accumulation of goods.