Is the best description of the domino theory?

Answer 1

The domino theory was a Cold War policy that suggested a communist government in one nation would quickly lead to communist takeovers in neighboring states, each falling like a perfectly aligned row of dominos.

Answer 2

The domino theory was a Cold War ideology that argued if one country fell to communism, neighboring countries would also fall like a row of dominoes. This theory guided U.S. foreign policy during the Vietnam War and was used to justify military intervention and support for anti-communist regimes in the region. However, the domino theory was ultimately disproven as communism did not spread to other Southeast Asian countries after the fall of South Vietnam.