| Answer | Crossword Clue |
|---|---|
| ERA | Signal historical stage. |
| ERA | Historical stage |
| REENACT | Stage, as a historical scene |
| REENACT | Stage, as a historical drama |
| stratum | part of a historical or sociological series representing a period or a stage of development |
| strata | part of a historical or sociological series representing a period or a stage of development |
| primitive | Relating to, denoting, or preserving the character of an early stage in the evolutionary or historical development of something |
