Final answer:
There are several proofs that people first developed in Africa, including the discovery of a three million-year-old pebble in South Africa and the independent development of ironworking technologies and agriculture in various regions of Africa.
Step-by-step explanation:
The evidence indicates that people first developed in Africa can be seen through various proofs:
- A pebble, approximately three million years old, was unearthed in a cave in South Africa, predating homo sapiens.
- Ironworking technologies were independently developed in Central Africa, allowing for more efficient farming and gradual expansion.
- The origins of agriculture can be traced to regions along the Nile River in Egypt, eastern Sahara of Sudan, and the bend of the Niger River in West Africa.
- Archaeological evidence supports the claim that modern humans left Africa between 80,000 and 100,000 years ago.
- The lack of writing systems in ancient Africa does not diminish the cultural and visual expressions that originated there.