Which conflict is also known as the Second Indochina War?

The Vietnam War is commonly referred to as the Second Indochina War. This conflict took place from the late 1950s through the mid-1970s and involved North Vietnam, supported by its communist allies, fighting against South Vietnam and its principal ally, the United States.

The term "Second Indochina War" is used to distinguish this conflict from the First Indochina War, which occurred from 1946 to 1954 and was primarily fought between the French colonial forces and the Viet Minh, a communist-led nationalist movement. The Vietnam War was marked by significant military escalation from the United States as it aimed to halt the spread of communism in Southeast Asia, which was a central concern during the Cold War period.

While the Korean War and the Gulf War are significant conflicts in their own right, they are distinct from the Vietnam War and do not share the same historical context or outcomes in Indochina. The Cold War, on the other hand, refers to the broader geopolitical tension between the United States and the Soviet Union but is not a specific war like the others listed. Therefore, identifying the Vietnam War as the Second Indochina War is correct due to its historical context and the opposing sides involved in the conflict.