Well said and facts pointed out @rok-sivante
I will like to chip in something here, having read through your post my interest in it was really much increased and i felt as a Nigerian i should be able to say one or two things.
Nigeria as we all know is the popularly acclaimed giant of africa, made of of people with different ethnic diversities and religion.
You have the igbos, yorubas and hausa been yhe main three tribes.
It is a well known established fact that in Nigeria there is freedom of worship, everyone decides who ever he or she wants to serve.
The igbos mostly are christians, the yorubas are in between mostly christians and muslims while the hausa in majority are muslims.
In hausa land , there promulgation of sharia practice is really very very functional and held high in esteem.
Sharia law is like a measure to curtail immorality in the northern region, though to some people, abolition of this law is what they pray for.

In the north it is well known that

there culture is embedded in their religion

So most of what they do are justified based on their beleifs, religion and practices.
Sharia law has its good and bad side.
But to me i think it has really done some good and some bad as well.

You want to know why moat nigerians comment and are attracted more to the post?
Simple

Nigerians are mostly curious to excell in all , especially the igbos. And they do this by learning from others

Your article was rich in content. Well articulated and chronologically arranged. I guess this also aroused my curiosity to read more in order to know more.
Kudo to you boss.
Keep it up. Glad following you.
Expectantly waiting for the part two