Domino Effect
The domino effect refers to a small change which will cause a similar change nearby, which then will cause another similar change, and so on in linear sequence, by analogy to a falling row of dominoes standing on end. Domino effect also relates to chain of events.
The domino theory was a 20th Century foreign policy theory, promoted by the government of the United States, that speculated if one land in a region came under the influence of Communists, then more would follow in a domino effect. The domino effect suggests that some change, small in itself, will cause a similar change nearby, which then will cause another similar change, and so on in linear sequence, by analogy to a falling row of dominoes standing on end. The Domino Theory was prosecuted by successive United States administrations during the Cold War, to justify American intervention around the world.
The domino theory was first proposed by President Dwight D. Eisenhower and his top advisers in 1954 to describe the prospects of communist expansion across Asia if Indochina were to fall. Eisenhower argued that all of Southeast Asia could fall under the sway of Communism (and by implication, under the de facto control of Communist China and/or the Soviet Union) unless America and its allies took direct action against Communist-backed “national liberation” movements in countries like South Vietnam, Laos and Cambodia, which were seen as being especially vulnerable to a Communist takeovers.
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