| Questions | Answers |
|---|---|
| 5000 years ago | earliest writing |
| 3500 to 4000 years ago | first civilization |
| 2 million years ago | Homo Erectus |
| 195 000 years ago | Homo Sapiens |
| 2.5 million years ago | Homo Habilis |
| 3.2 million years ago | Lucy |
| 4 million years ago | Australopithecines |