who invented the first system of writing

The first system of writing is generally credited to the Sumerians of ancient Mesopotamia. They invented the cuneiform script around 3400 to 3200 BCE. This early writing system evolved from earlier counting and record-keeping methods using clay tokens to pictographs and then more abstract symbols that could represent sounds as well as meanings. It was the first writing system that can be traced continuously from its prehistoric origins, and it was used initially for accounting and later for a full range of communication needs in Sumerian civilization. Writing systems were also invented independently later in China (around 1200 BCE) and in Mesoamerica (around 300 BCE), but the Sumerian cuneiform is the earliest known system of writing.