Age of Queen-Mothers
(1–3946)
Foundation Era
(1–238)
First Expansion Era
(238–621)
Antiquity Era
(621–1163)
Royal Dominion Era
(1163–1404)
Second Expansion Era
(1404–2009)
Second Antiquity Era
(2010–2874)
Militaristic Era
(2874–3210)
Third Expansion Era
(3210–3581)
Decline Era
(3581–3946)