Couple items to discuss here to get started:
Simcad Pro Simulation Software - Factory simulation software examples - YouTube
1) We need clay. Make it, mine it, whatever and ship it with drones on an autonomous loop. if we program correctly, and have automated mining equipment, we should be able to deploy this with little human help needed and let it just rumba the earth.
2) Nigeria and other countries have a lot of clay, working with local tribes to allow this process will be difficult, not to mention mining without any environmental impact. This is probably unavoidable, so i would rather create a safe haven first, and then as we mine we already created better land somewhere else. we may destroy some parts of africa to heal the whole continent.
3) CHAD- probably a great spot to mine from and send drones to scatter the soil.
4) as the project scales and we grow seeds in the newly created area, we can start to feed this project with the towns we create. Each town will be responsible for fostering a couple species local to the area we can re-introduce as the project grows along.
5) we have to solve the sand problem. I can grow on top or with a mix, but if we could blow it up and churn the earth that would be wayyyy easier even though it seems destructive. you plow the field with space drops. you know what i mean,.