There's a circular overlay near the west coast of Africa that seems to show the use of writing in central America. Anyway, I don't think it matters that much.

There's a circular overlay near the west coast of Africa that seems to show the use of writing in central America. Anyway, I don't think it matters that much. I checked the channel, and I came away with the feeling that it should probably not be treated as a particularly accurate or credible channel. They don't mention their sources or their credentials. It seems to be a history and cartography hobbyist channel and that's how I treat it -- as a starting point to dig deeper if I spot something interesting.