| Answer | Crossword Clue |
|---|---|
| headmost | most advanced; foremost |
| OLDEST | Most advanced |
| EDGE | Cutting ... (most advanced) |
| ELDEST | Most advanced in years. |
| WHITMAN | Most advanced U. S. poet of his day. |
| civilisations | The stage of human social development and organization that is considered most advanced |
| civilization | The stage of human social development and organization that is considered most advanced |
| civilizations | The stage of human social development and organization that is considered most advanced |
