Answer:Things could overpopulate and the food levels would go down.
Explanation:
It was and still is the Hindu Kush Mountains. Stretching about 500 mi across.
Assuming that you're referring to the villages in the Sahel during the era of Sahelian Kingdoms, a lot of them settled on the edge of Sahara, on its southern border to be precise. The southern border of Sahara is filled with forests and have enough resource to sustain their living. But they cant go any further because they were hindred by the Ashanthis and Yoruba
Cuba......................................................
Weathering agents would be the correct answer.
