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to rule; to govern; to reign over; to administer; to manage (e.g. a household)
to subdue; to suppress; to quell; to settle (e.g. a dispute)
昔、賢明な王様が国を治めていました。
The king was ruling the country.
優れた指導者が組織を治める。
Excellent leaders govern organizations.
平和に国を治めることが大切だ。
Governing a country in peace is what truly matters.