Add BCE temporal tags to all documents; add temporal-dating steering doc

rulers/ashoka.md

@@ -2,12 +2,12 @@
 # Ashoka
 
 ## Overview
-Ashoka (~304–232 BCE), also known as Ashoka the Great, was the third Maurya emperor who, after the bloody conquest of Kalinga, converted to Buddhism and promoted non-violence through rock and pillar edicts across the Indian subcontinent. His name means "without sorrow" in Sanskrit. In his edicts he styled himself *Devanampiya Piyadassi* ("Beloved of the Gods, gracious of mien"). [^3]
+Ashoka (~304–232 BCE), also known as Ashoka the Great, was the third Maurya emperor who, after the bloody conquest of Kalinga, converted to Buddhism and promoted non-violence through rock and pillar edicts across the Indian subcontinent. His name means "without sorrow" in Sanskrit. In his edicts he styled himself *Devanampiya Piyadassi* ("Beloved of the Gods, gracious of mien"). @t[304 BCE..232 BCE] [^3]
 
 ## Key Facts
-- Born: ~304 BCE, Pataliputra
-- Died: ~232 BCE
-- Reign: ~268–232 BCE
+- Born: ~304 BCE, Pataliputra @t[~304 BCE]
+- Died: ~232 BCE @t[~232 BCE]
+- Reign: ~268–232 BCE @t[268 BCE..232 BCE]
 - Dynasty: Maurya
 - Religion: Buddhism (after Kalinga War)
 - Father: Bindusara (r. ~297–273 BCE)
@@ -21,13 +21,13 @@ Ashoka (~304–232 BCE), also known as Ashoka the Great, was the third Maurya em
 - Governed using the *Arthashastra* (political treatise attributed to Chanakya, Chandragupta's prime minister) as his administrative framework [^3]
 
 ## The Kalinga War
-- Conquered Kalinga (~262 BCE) with devastating casualties (~100,000 killed, 150,000 deported per his own edicts)
+- Conquered Kalinga (~262 BCE) with devastating casualties (~100,000 killed, 150,000 deported per his own edicts) @t[~262 BCE]
 - The carnage prompted his conversion to Buddhism [^1]
 - His 13th Major Rock Edict records his remorse over the campaign
 
 ## Ashoka's Edicts
 - 33 inscriptions total on pillars, boulders, and cave walls across the empire [^3]
-- Written in Prakrit, Greek, and Aramaic; the Kandahar Bilingual Rock Inscription (~260 BCE) is carved in both Greek and Aramaic at Chehel Zina, Afghanistan [^2]
+- Written in Prakrit, Greek, and Aramaic; the Kandahar Bilingual Rock Inscription (~260 BCE) is carved in both Greek and Aramaic at Chehel Zina, Afghanistan @t[~260 BCE] [^2]
 - Promoted *dhamma* (dharma): Non-violence, religious tolerance, welfare of subjects
 - Established hospitals for humans and animals
 - Sent Buddhist missionaries to Sri Lanka, Central Asia, and the Hellenistic world [^2]