domino theory


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domino theory

1. The political theory that, if one country or area adopts communism, then the surrounding ones will as well. The domino theory was a major concern as the Soviet Union expanded its power after World War II.
2. By extension, the idea that an event in one country will result in similar events in the surrounding countries. The string of revolutions that occurred in neighboring countries during the Arab Spring was a great example of domino theory in action.
See also: domino, theory