>>17934477
Metallurgy got to prehispanic Mexico during the late 13th c., when Toltecs were around and still, it was only gold and silver to some extent; and for jewels.
Most common interpretations of Olmec giant heads is that it represented monarchs/chieftains (according to Ann Cyphers and Michael Coe, they even claim there were indications of lineages) ; and/or sacrificial heads related to fertility rituals (Caterina Magni and Christian Duverger).
The idea of Olmec being of Phoenico-African descent or trading with Africans isn't viewed nor accepted as a credible theory. It's mostly based on the assumption that native American peoples weren't capable of creating anything original which fueled white supremacists claims to dominating Mexico politically (to some critics that is)