Captain Rob wrote:
I'm assuming that Swahili is spoken with an African accent.
Not automatically, I speak Portugese with a pretty thick Brazilian accent, so it would be possible to speak Swahili without the Africa infections/accent.
It would be hard to say if Uhura herself responded with or without a African accent.
Just because a black person speaks with an accent doesn't mean they have an African accent. As Carcazoid said, it's a big continent. As Dale said, this includes Sudanese and Egyptians.
Wouldn't people who were natives of Egypt and the Sudan have African accents?
Africa has about a hundred major indigenous languages, and in total over three thousand.