1To rule, govern, or administer a country, organization, or household; to maintain order through leadership or management.
歴史上、多くの大名がそれぞれの領地を治めていた。
Historically, many daimyo governed their own domains.
彼は市長としてこの市をうまく治めている。
As mayor, he governs this city well.
祖父は厳しく家を治める人だった。
My grandfather was a person who ran the household strictly.
2To subdue, suppress, or quell something such as a rebellion, dispute, or strong emotion; to calm it down.
政府は各地で起きた暴動を速やかに治めた。
The government quickly quelled the riots that broke out in various places.
上司が間に入り、二人の争いを治めた。
The boss stepped in and settled the dispute between the two of them.
深呼吸をして、こみ上げる怒りを治めた。
I took a deep breath and calmed the anger that was welling up inside me.