What are the start and end dates for the Vietnam Conflict?

The Vietnam Conflict is historically recognized to have officially commenced on December 31, 1960, with the formation of the National Front for the Liberation of South Vietnam, commonly known as the Viet Cong, and it is widely accepted to have ended on May 7, 1975, when the last U.S. forces evacuated and North Vietnam achieved full control over the south. This timeframe captures the key military engagements and critical political developments that defined the conflict.

In contrast, the other options refer to different conflicts or military operations. For instance, those associated with the Gulf War occurred from August 2, 1990, to February 28, 1991, which is not relevant to the Vietnam Conflict. Similarly, the dates provided in the other options do not pertain to the Vietnam Conflict and involve separate military actions or operations that occurred either in the Korean War or other U.S.-led interventions in the Caribbean. Therefore, the selection of the December 31, 1960 - May 7, 1975 timeline accurately reflects the duration of the Vietnam Conflict, making it the correct answer.