johnklepac wrote:My understanding is that Batua is a sort of Swahili amongst Basque dialect speakers, though East Africa obviously has many more people than Basque Spain and France. Nevertheless, Batua, like Swahili, appears to be used disproportionately widely considering how few native speakers it boasts.
That's not actually the case. Swahili evolved as a lingua franca over centuries; Euskara Batua was created by Euskaltzaindia (the Basque language academy) in the 60s as an artificial koiné. It doesn't really have native speakers, unless you count those few families where the parents learned Basque in school (where Euskara Batua is taught) and are passing it on to their children.