| Answer | Crossword Clue |
|---|---|
| TOLLED | Marked the hour |
| TOLLED | Marked the hour, in a way |
| XED | Marked the spot |
| SCANNED | Marked the iambs |
| WEATHERED | Marked by the elements |
| LED | Marked the way for. |
| ALE | Bottle marked "XXX" in the comics |
| ALE | It's marked XXX in the comics |
| WWI | It marked the beginning of the "Lost Generation" |
| EROICA | Work that marked the start of musical Romanticism |
| VIETNAM | It recently marked the 55th anniversary of its independence |
| PERMIAN | Period marked by the largest mass extinction in earth's history |
| ATLANTIS | Its 2011 landing marked the end of the Space Shuttle program |
