Final answer:
The Tet Offensive was a surprise attack launched by the Vietcong and North Vietnamese forces during the Vietnamese New Year. Although not a military success, it had significant political and psychological impact, leading to a loss of public support for the war effort.
Step-by-step explanation:
The Tet Offensive, which took place on January 30th, 1968 during the Vietnamese New Year called Tet, was a surprise attack launched by the Vietcong and North Vietnamese forces in multiple locations in South Vietnam. Although the offensive was not a military success for the Communist forces, it had significant political and psychological impact. The scale of the attacks contradicted the Johnson administration's portrayal of the war, leading to a loss of public support for the war effort and contributing to the decision to seek an end to the conflict.