To increase the flow of the Nile in order for Egypt to realise its ambitious desert reclamation plan, Egypt sees the completion of the digging of the Jonglei canal through the vast swamps of the Sudd in Southern Sudan as the top priority.
The sahara made migrating rough because it was a desert but it was easier to pass through rather than south afria going through jungles
The horizon!!! This is basic. Brainliest answer over here!!