From what I gathered from your question I think you are talking about the president of Nigeria and his name is Muhammadu Buhari.
The Australian frontier wars<span> were a series of conflicts that were fought between </span>Indigenous Australians<span> and mainly </span>British settlers<span> that spanned a total of 146 years
I hope this helps you a lot (:</span>
Answer:
i think the answer may be, B