Final answer:
The Olmec are often regarded as the 'founders' of Mesoamerica. They are known for their advanced artwork and influence on later civilizations like the Maya and Aztec through their extensive trade network and cultural developments.
Step-by-step explanation:
The Olmec civilization is often regarded as the founders of Mesoamerica, producing the earliest examples of sophisticated artwork. Their contributions laid the groundwork for later civilizations such as the Maya and Aztec. The colossal head sculptures and pyramid at La Venta are among the most recognizable Olmec creations, demonstrating their advanced artistic and architectural capabilities.
The Olmec's influence extended through trade, spreading their ideas about religion, art, architecture, and governance throughout Mesoamerica. This extended reach helped establish a consistent cultural framework, including ritual ball games, religious deities, and calendar systems, which were evident among numerous Mesoamerican cultures that followed.
Despite the mystery that surrounds the decline of their civilization, the Olmec legacy persisted, cementing their role as the foundational culture that influenced the Maya and the Aztec civilizations. It is in this context that we can consider the Olmec as the founders of Mesoamerican cultural and artistic traditions.