Across
- 5. the metal people used to make tools in the Chalcolithic Age
- 7. early signs of civilizations were found here
- 8. tools made of stone
Down
- 1. this age saw the beginning of agriculture
- 2. a place famous for cave paintings in France
- 3. the greatest discovery of mankind
- 4. early men lived in these
- 6. it means the Old Stone Age