Final answer:
The Tet Offensive was a turning point in the Vietnam War, as it led to a shift in public opinion and exposed the US military's false claims of progress.
Step-by-step explanation:
The Tet Offensive was a major blow to the US because it had a significant impact on public opinion and led to a shift in support for the war. Despite not achieving their military objectives, the North Vietnamese and Viet Cong forces launched a massive attack that demonstrated that the US military's claims of progress in the war were false.Television coverage of the offensive showed the brutality and carnage of war, leading many Americans to question the US involvement and call for the immediate withdrawal of troops. This resulted in a short-term setback for the US forces and eventually led to President Johnson's decision to seek an end to the war.The Tet Offensive was a turning point in the Vietnam War and led to a change in public opinion that viewed the US intervention as a mistake.