Is the W here just for the sound? I would think that afrika is the root word and M is the singular so Mafrika would normally be the case but there is a reason W is put between M and Afrika..
Mwafrika can literally be broken into a wider form this way:
Mtu wa Afrika (M W Afrika) (meaning a person from Africa)
So Mafrika wouldn't depict this meaning w/o W
M + vowel usually makes mw except in front of u.
Shouldn't it accept "Je" at the beginning, as it's a yes/no question?
Where is the different between "are you African" and "you are African" in suaheli. How do I know if it's a question
"Je, wewe ni Mwafrika?" is usually the most clear way to convey questions, although just adding a question mark is fine too. 'je' always goes at the beginning