Plural of dinarchy; systems of government or rule by two people or two powers.
From 'dinarchy' (di- + Greek 'archia,' rule) with regular English plural '-ies.' Archaic political science term rarely used in modern governance discussion.
Dinarchy is so obscure that most political scientists would struggle to name a historical dinarchy—we have monarchies and democracies, but dual-leader governments rarely last long enough to earn special names.
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