Across
- 2. a source that is a first-hand account of an event
- 3. time period since the birth of Christ
- 4. means about and used when the exact date is unknown
- 6. a source that is a second-hand account of an event
- 7. time period before the invention of writing
- 9. object made or used by people in the past
- 10. the first writing system ever invented
Down
- 1. an expert who writes history
- 3. an expert who digs up and studies artifacts
- 5. time period before the birth of Christ
- 8. the most commonly found artifact