In order to answer this question, you only need to know in which country does the Darfur region lie- and the answer is Sudan. This is also the correct answer to this question
The two countries that Sudan split into are Sudan and South Sudan.(South Sudan has been very unstable since the separation).
The map with the smallest scale would be a World map or Globe. The largest scale would be a city map.
I would say that the main problem affecting North Africa and SW Asia would most likely be water or the scarcity of it assuming that North Africa would include places like the Sahara Desert and also the south of India which I believe is quite arid..
Over time, pressure continues to build in the tectonic plates, until suddenly, they shift in an earthquake. Aftershocks are common, but then a long time can pass before another one becomes likely.