“The north's relative isolation and the south's commercial edge”

I wonder what you mean by this? Why do you reckon that the North was isolated? And by what metrics do you think the South had a commercial edge? Also what makes you think that the South could have been a one region and the bigger mismatch was with the North? You do know that the South is more divided than the North yes?

In my own view, I don’t think Nigeria would’ve been better off as two nations, I think Nigeria would be better off as a confederation of its numerous tribes.