| A | B |
|---|
| history | a record of events over time |
| chronology | an arrangement of events in the order in which they occurred |
| decade | ten years |
| era | a period of time set off by some prominent figure or characteristic feature |
| century | 100 years |
| A.D. | anno Domini (in the year of the Lord) |
| B.C. | Before Christ |
| BCE | Before the Common Era |
| CE | Common Era |
| oral history | history passed on through stories, songs and legends |
| primary source | first hand information about people or events of the past, such as that found in a diary or legal document |
| secondary source | information about the past that is not based on direct experience |
| prehistory | before the time of written history |
| archaeology | the scientific study of the material remains of past human life and activity |
| artifact | any object shaped by human hands as well as other remains of human life (example: charcoal) |
| millennium | a period of 1000 years |
