Historical clue formulations

• When we forged ahead? — 2024-03-30
• Period in ancient history — 2022-10-16
• Period in human history after bronze was supplanted in toolmaking — 2021-08-09
• Historical period — 2018-02-25
• Period in Europe starting around 1100 B.C. — 2017-09-19
• Post-Neolithic period — 2016-10-09
• When blacksmithing began — 2015-05-31
• Tool time? — 2013-01-25
• It started around 1100 B.C. — 2012-09-02
• When bronze was supplanted in toolmaking — 2011-04-04
• First millennium B.C., roughly — 2010-11-17
• Early period — 2009-01-24
• It started around 1100 B.C. — 2008-03-02
• Primitive period — 2004-04-09
• When coins came into general use — 2004-01-31
• Period in human development — 2003-05-25
• Period in human development — 2002-12-25
• When coins came into common use — 2002-03-02
• Retooling time? — 2002-02-17
• Early period in human history — 2001-01-15
• It started a little before 1000 B.C. — 1999-02-28
• Primitive time — 1998-08-13
• It began around 1100 B.C. in Europe — 1998-08-02
• When alphabetic writing became widespread — 1996-08-17
• Archeologist's period — 1996-07-05
• Period in human history — 1996-05-03
• Period starting about 1000 B.C. — 1995-01-05
• Human culture phase — 1994-11-30
• Period of antiquity — 1994-05-28