white, chocolate, and charcoal. Pictographs then began to appear on clay tablets around 4000 BCE, and after the later development of Sumerian cuneiform writing, a more sophisticated partial syllabic script evolved that by around 2500 BCE was capable of recording the vernacular, the everyday speech of the common people.

Sumerians used what is known as pictograms. Pictograms are symbols that express a pictorial concept, a logogram,