Final answer:
The oldest known mention of grass comes from the Fertile Crescent in southwestern Asia approximately 12,000 years ago.
Step-by-step explanation:
The oldest known mention of grass comes from the region known as the Fertile Crescent in southwestern Asia. This region extends from Greece to the south of the Caspian Sea. Evidence of agriculture based on the cultivation of seeds and the domestication of goats and sheep date back approximately 12,000 years ago.