Historical clue formulations

• Sparta's foe in "300" — 2018-05-11
• Shah's domain until 1935 — 2017-09-20
• Xerxes' empire — 2012-05-22
• Source of fine rugs — 2011-06-28
• One side in the Battle of Marathon — 2009-01-10
• Old Iran — 2007-03-26
• One side in the Battle of Thermopylae — 2007-01-19
• Qajar dynasty's domain — 2006-10-13
• Qajar dynasty's domain — 2006-07-28
• Realm of Cyrus the Great — 2001-12-09
• Darius I's land — 2001-08-18
• Kajar dynasty's domain — 1998-10-17
• Old Iran — 1996-12-02
• Source of an old rug — 1996-05-30
• Olden Iran — 1996-02-05
• Xerxes ruled here — 1994-06-15