Final answer:
The Olmec civilization is the earliest civilization identified in Mesoamerica.
Step-by-step explanation:
The earliest civilization currently identified in Mesoamerica is known as the Olmec. The Olmec civilization existed from around 1200 to 400 BCE in what is now southern Mexico. They were known for their advanced agriculture, art, and monumental architecture.
Learn more about Mesoamerican civilizations