The Sahel Is a 'Sahara'

There has beenh this line that you could draw across africa, and it tallies pretty closely with the sahal. And all these countries in that line have experienced a change. i'm going to spend th most time dealing with sudan, because it's the biggest of these countries,. Even after split of south sudan, and probably the most important. But it's a little different in that it was never part of the french colonial world.