Ask buhari why he jailed american citizen 95 years in 1984 northern leader urges trump

I think there may be some inaccuracies in your question.

Firstly, Muhammadu Buhari was not the President of Nigeria in 1984. He was a military Head of State from December 31, 1983, to August 27, 1985.

Secondly, I couldn't find any information about an American citizen being jailed for 95 years in Nigeria during Buhari's regime or at any other time.

Lastly, it's unlikely that a Northern leader would urge President Trump to ask Buhari about something that didn't happen.

If you could provide more context or clarify what you're referring to, I'd be happy to help you with your question.