Final answer:
Olmec artifacts included materials such as obsidian, magnetite, and jade, reflecting their extensive trade networks and advanced cultural practices in art and religion.
Step-by-step explanation:
The Olmec civilization, known for its influential culture in Mesoamerica, utilized a variety of materials for their artifacts. Among these, commonly used materials included obsidian, magnetite, and jade. The Olmec were engaged in extensive trade networks that facilitated the exchange of these valuable materials, which were then crafted into artistic and ceremonial objects. With their advanced cultural practices, the Olmecs created numerous works of art that reflected their religious beliefs and societal structure, leaving behind a legacy that influenced future Mesoamerican civilizations.