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| African Event | Years Ago | African Event | Years Ago |
|---|---|---|---|
| Ishango | 27,000 | Star Gazing | 40,000 |
| Rock Art | 53,000 | Microiths | 75,000 |
| Mining | 90,000 | Jewelry Beads | 90,000 |
| Incised pieces | 95,000 | Barbed Points | 100,000 |
| Long Distance Exchange | 125,000 | Shell Fishing | 140,000 |
| Points | 250,000 | Pigment Processing | 250,000 |
| Grind Stones | 250,000 | Blades | 250,000 |
Copyright © 2006 African Contributions to Civilization Prehistoric to Modern Times. All Rights Reserved.