What are the modern countries in the territory of ancient people in Africa?

Ancient people once existed on the territory of such modern countries: Ethiopia, Kenya, Somalia, etc. We can say that it was here that the first ancient man appeared about 3 million years ago. It was Australopithecus. He looked more like a monkey. Its growth reached 1.5 m. Australopithecines lived in herds and were mainly engaged in gathering. They used a stick and a stone from tools of labor, that is, they were still very primitive.