C: imaginary line dividing Nigeria into north and south
Explanation:
The Middle Belt is a term used in human geography to designate a belt region stretching across central Nigeria longitudinally and forming a transition zone between Northern and Southern Nigeria. I hope I've helped. I also took it on E2020. If you need further explanation, please comment below.
Transportation and the ability for factories to be located anywhere
Explanation:
The steam engine allowed for people to travel farther faster and well as gave factories the ability to be located anywhere and not near the source of water to get supplies.