Question

what was the name of the theory that said that if one country in a region fell to communism, others would surely follow?
○ domino theory
○ arms race
○ brinkmanship
○ containment theory

Explanation:

The domino theory proposed that if one country in a region adopted communism, neighboring countries would follow like falling dominoes. The arms race refers to competing to develop more weapons. Brinkmanship is about pushing a dangerous situation to the edge. Containment theory aimed to prevent the spread of communism, not describe the domino - like spread. So the correct option is the one related to the domino - like spread of communism.

Answer:

A. domino theory