Conversation so far:
What was the origin of the Olmec?
The beginnings of Olmec civilization have traditionally been placed between 1400 and 1200 BCE. It seems that the Olmec had their roots in early farming cultures of Tabasco.
What can you tell me about the Olmec at El Manati?
Past finds of Olmec remains were ritually deposited at El Manati shrine.
How did the Olmec start?
It seems that the Olmec had their roots in early farming cultures of Tabasco, which began between 5100 BCE and 4600 BCE.
What technologies did the Olmec have?
What is alluvial soil?
Alluvial soil is loose, unconsolidated soil or sediment that has been eroded, reshaped by water in some form, and redeposited in a non-marine setting.
Are there any other interesting aspects about the Olmec's?
What is today called Olmec first appeared fully within the city of San Lorenzo Tenochtitlán, where distinctive Olmec features occurred around 1400 BCE.
Did the Olmecs separate themselves by classes?
The elite class created the demand for the production of the symbolic and sophisticated luxury artifacts that define Olmec culture.

Question: What were the artifacts?
Self-contained rewrite: What were the artifacts of the Olmecs?