Triarchy
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A triumvirate (Latin: triumvirātus) or a triarchy is a political institution ruled or dominated by three individuals, known as triumvirs (Latin: triumviri). The arrangement can be formal or informal. Though the three leaders in a triumvirate are notionally equal, the actual distribution of power may vary.
The term can also be used to describe a state with three different military leaders who all claim to be the sole leader.
Informally, the term "triumvirate" may be used for any association of three.
Under the influence of the Soviet Union, the term troika (Russian: for "group of three") may be used for "triumvirate".
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