The development of writing system directly allowed record keeping and, in turn, it remains the main source historians rely on when doing research.
The first known writing system is called cuneiform and was first developed around the eighth millenium BCE. Such system, which served as a form of record keeping in Mesopotamia, used clay tokens to represent individual products. As time passed, markings were used on the tokens that led to pictographic writing. Record keeping as well as writing were developed due to the need to account for agricultural products and the growth of trade.
As history shows, writing developed over time in an inevitable way from logographic, to syllabic, to alphabetical systems.
Nowadays, it would be difficult, if not imposible, to study about ancient cultures, such as the early life of Mesopotanians, without the development of writing.
