Which people first wrote their language by pressing symbols into wet clay with a pointed stick?

The oldest writing system known is the Sumerian cuneiform. Its origin may be traced back to about 8,000 BC. The system includes the pictograph and symbols for most of the goods. They made small tokens out of clays to represent these items. The clays were used to seal envelopes and other documents. 

The answer is a and hi how are you doing