When we forged ahead? Crossword Clue

• Period in ancient history

  New York Times · Sunday, October 16, 2022 · 7 letters

• Period in human history after bronze was supplanted in toolmaking

  New York Times · Monday, August 9, 2021 · 7 letters

• Historical period

  New York Times · Sunday, February 25, 2018 · 7 letters

• Period in Europe starting around 1100 B.C.

  New York Times · Tuesday, September 19, 2017 · 7 letters

• Post-Neolithic period

  New York Times · Sunday, October 9, 2016 · 7 letters

• When blacksmithing began

  New York Times · Sunday, May 31, 2015 · 7 letters

• Tool time?

  New York Times · Friday, January 25, 2013 · 7 letters

• It started around 1100 B.C.

  New York Times · Sunday, September 2, 2012 · 7 letters

• When bronze was supplanted in toolmaking

  New York Times · Monday, April 4, 2011 · 7 letters

• First millennium B.C., roughly

  New York Times · Wednesday, November 17, 2010 · 7 letters

More clues from this crossword

• 44-Across +/-
• 45-Across Young partner
• 46-Down Concentration in chemistry
• 47-Across Golfer who qualified for a U.S.G.A. amateur championship at age 10
• 48-Across Locals go to all of them
• 48-Down Tennis star with a famed 1995 comeback
• 49-Across French : -ant :: English : ___
• 51-Down Free ___
• 52-Down Big blow
• 53-Across ___ Records, onetime label for the Kinks and Petula Clark
• 54-Across Kitchen mess
• 55-Down Refrain syllable