I think its c not sure tho
<span>Unpredictable floods, small & defenseless region, and limited natural resources.</span>
900 miles west is actually not that far - actually around 500 miles west from Khartoum, it's still Sudan! And exactly 900 miles west of Khartoum is in the middle of Chad -so the correct answer is Chad!!!
Chad is also the country that borders Sudan to the West.
Composite, shield, and cinder cone volcanos form when lava from the upper mantle works its way to the surface. At the surface, eruptions take place. Eventually, with more and more eruptions the volcano gets bigger.
