hep·tar·chy /ˈhɛpˌtɑrki/
  七頭統治,七國連盟,七王國
  Hep·tarch·y n.  A government by seven persons; also, a country under seven rulers.
  Note: ☞ The word is most commonly applied to England, when it was divided into seven kingdoms; as, the Saxon heptachy, which consisted of Kent, the South Saxons (Sussex), West Saxons (Wessex), East Saxons (Essex), the East Angles, Mercia, and Northumberland.
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