The context has an implicit silent inclusion: Discovered (for the first time by the "Old World"/Known Written Records) It's implicit. Not unlike how we don't

The context has an implicit silent inclusion: Discovered (for the first time by the "Old World"/Known Written Records) It's implicit. Not unlike how we don't discount the extant aboriginals of the Americas being here "first" just because they (generally) aren't actually the descendants of the first human populations that came here (but rather seem to have committed genocide on those people). It's implicit through context.