Sad but interesting posts in this thread.
Why is the North more dangerous than the South?
Where do i start...
First is the size of the area. The northern part of the country is bigger than the rest of the country combined. When you couple that with one of the most ineffective and corrupt militaries in the world, you have a a shit/il-equipped army having to man a massive region.
The second is the northern border. Nigeria's longest border is shared with what are essentially two failed states. The border is very porus. So you have foreign terrorists and mercenaries coming all the way from Libya or seekeing refuge from Tunisia, Mali etc.
The third is both cultural and religious. Nigeria is divided into three major tribes. Hausa, Igbo and Yoruba. The north are Hausa/predominantly Muslim. In the south, you have the Yoruba and Igbo, predominantly Christian but its debatable in the case of Yoruba. I will say the Yorubas are pretty evenly split between Chirstain and Muslim or slightly tilted towards Christian.
Now there is a big literary gap between the north and the south. So what you see is the poverty rate/underevelopment and illiteracy rate much higher in the north. That leaves a small but potent minority in the north susceptible to jihadi propaganda. You often hear about Boko Haram but there are now dozens of terrorists grouos running rampage. Boko Haram are just the biggest.
The fourth is Tribal. Like I said earlier, the predominant group in the north are the Hausa. However there is a smaller tribe in the north called the Fulani. A section of the Fulani are normadic cattle reares. This section have always been in conflict with farmers as their grazing cattle destroy farming communities. These conflicts have escalated. Some feel this has been further instigated by the current administration. Our president is Fulani so some feel this has emboldened the normadic cattle herdsmen. The conflicts have rapidly spread around the country but still mostly concentrated in the north.
So although the entire country faces security challenges, the scale in the north is on a whole different level.
You have state governors offering bandits give sums of money as ransom payments which is increasing the cycle of violence with more kidnappings and money is being used to fund terrorist groups.
I encouraged people to vote for the current president when he ran for office in 2015. He has been a catastrophe.