Which conflict is associated with the "Domino Theory" regarding the spread of communism?

The conflict associated with the "Domino Theory" is the Vietnam War. This theory was a pivotal aspect of U.S. foreign policy during the Cold War, particularly in relation to Southeast Asia. The Domino Theory posits that if one country in a region fell to communism, neighboring countries would likely follow suit, much like a line of falling dominoes. During the Vietnam War, U.S. leaders believed that a communist victory in Vietnam would lead to the spread of communism throughout Southeast Asia, potentially threatening other countries, such as Laos, Cambodia, and beyond.

This belief was a driving factor behind American military intervention in Vietnam, as the government sought to contain communism and prevent its spread. The theory was rooted in the geopolitical landscape of the time, emphasizing the perceived need to combat communism aggressively to maintain global stability and support allied nations against communist influences. The other conflicts listed, while significant, do not directly relate to the specific concerns of the Domino Theory in the context of this particular policy and the fears around the spread of communism in the Vietnam era.