El Manatí "elongated man" style and are the oldest wooden artifacts yet found in Mexico. The rubber balls are also the earliest such items yet discovered and were possibly used in the Mesoamerican ballgame. The Olmec were a Pre-Columbian civilization living in the tropical lowlands of south-central Mexico, close to the border between the modern-day states of Veracruz and Tabasco. The Olmec flourished during Mesoamerica's Formative period, dating roughly from as early as 1500 BCE to about 400 BCE. Pre-Olmec cultures had flourished in the area since about 2500 BCE, but by 1600-1500 BCE Early Olmec culture had emerged centered around the
Mayan languages only past and non-past, while Mam has only future and non-future. Aspect systems are normally more prominent. Mood does not normally form a separate system in Mayan, but is instead intertwined with the tense/aspect system. Kaufman has reconstructed a tense/aspect/mood system for proto-Mayan that includes seven aspects: incompletive, progressive, completive/punctual, imperative, potential/future, optative, and perfective. Mayan languages tend to have a rich set of grammatical voices. Proto-Mayan had at least one passive construction as well as an antipassive rule for downplaying the importance of the agent in relation to the patient. Modern K'iche' has two antipassives: one which ascribes focus