| Answer | Crossword Clue |
|---|---|
| ERA | History chapter, perhaps |
| ERA | History book chapter, perhaps |
| ERA | History-book chapter, perhaps |
| ERA | History chapter |
| DECADE | History chapter |
| AGE | Chapter of history |
| ERA | Chapter in history |
| ERA | History book chapter |
| ERA | History-book chapter |
| ERA | Chapter of history |
| ERA | "Common" chapter of history |
| ERA | Chapter in music history |
| THESILENTERA | Chapter in film history |
| ERA | Chapter in a history book |
| ELEVEN | Chapter in many airlines' history |
| WWI | Chapter in early 20th-century history: Abbr. |
