Plural of containment; the act or process of keeping something harmful, dangerous, or unwanted within certain limits or boundaries.
From contain (Latin continēre, 'to hold together') + -ment (suffix forming nouns of action). The word evolved from 14th-century usage meaning 'what contains' to modern usage emphasizing restraint and control, especially in military and political contexts.
During the Cold War, 'containment' became a famous foreign policy strategy where the US aimed to limit Soviet expansion—this shows how a simple everyday word can become a major historical concept that shaped world events.
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