IPA: /ˈpɛn.tɑːr.ki/
KK: /ˈpɛntɑrki/
A system of governance where five leaders or governments share power and rule together.
The pentarchy was established to ensure that no single ruler could dominate the others.
Pentarchy → It is formed from "penta-" (from Greek "pente", meaning five) and "archia" (from Greek "archē", meaning rule or government). The word refers to a government or rule by five leaders or authorities.
Think of the prefix 'penta-' meaning five, and 'archia' meaning rule — this helps you remember that a pentarchy is a rule by five.