7 April

The domino theory was a theory prominent from the 1950s to the 1980s, that speculated that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.


Though he never directly used the term “domino theory”, U.S. President Dwight D. Eisenhower put the theory into words during an 7 April 1954 news conference, when referring to communism in Indochina:
