Collection of facts about the Olmecs

This post is a collection of facts about the Olmecs (c. 1200 - 400 BC). There are 6 facts listed below. Source: Wikipedia

• Based on modern-day Veracruz and Tabasco (Mexico)
• Sites at San Lorenzo Tenochtitlán and La Venta
• Stone colossal head artwork
• Played Mesoamerican ballgame
• Great Pyramid built at La Venta
• Cascajal Block writing