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Olmec Heartland Overview 4
CC BY 3.0
Polity Americas

Olmec

Attested 1500 BCE – 400 BCE

Earliest known major Mesoamerican civilization

Wikipedia

The opening of the article, and a way into the rest of it without leaving the site.

Olmecs on Wikipedia.

How these dates were made

Why this bar's edges are floors, not a founding and a fall.

The atlas draws the world at 5 moments in time, not continuously. This bar runs from the first snapshot in which Olmec appears to the last, so both edges are floors — the earliest and latest years it is attested, not a founding and a dissolution.

1500 BCE 5 snapshots · 500 years unattested at the widest 400 BCE

Elsewhere in Americas at the time

Records whose own span overlaps this one, found by the same test the canvas draws with. The bar under each card is where it sits inside this one.

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Image credits5 pictures from Wikimedia Commons