I guess you may have heard this statement before ” Dynamites come in small packages, but their impact is far reaching”
President Dwight D. Eisenhower coins one of the most famous Cold War phrases when he suggests the fall of French Indochina to the communists could create a “domino” effect in Southeast Asia. The so-called “domino theory” dominated U.S. thinking about Vietnam for the next decade.
The domino effect is a chain reaction that occurs when a small change causes a similar change nearby, which then causes another similar change, and so on in linear sequence. It typically refers to a linked sequence of events where the time between successive events is relatively small. It can be used literally (an observed series of actual collisions) or metaphorically (causal linkages within systems such as global finance or politics).
Finally, you have broader considerations that might follow what you would call the “falling domino” principle. You have a row of dominoes set up, you knock over the first one, and what will happen to the last one is the certainty that it will go over very quickly. So you could have a beginning of a disintegration that would have the most profound influences.