Answer :
Final answer:
The Phoenix Program during the Vietnam War made Nguyen Van Thieu's government less popular due to its controversial methods.
Explanation:
The Phoenix Program was a controversial CIA-led initiative during the Vietnam War aimed at suppressing the Viet Cong insurgency. It involved targeted assassinations, torture, and interrogation of suspected Viet Cong members and sympathizers. The program's harsh measures led to widespread criticism and increased opposition to Nguyen Van Thieu's government, making it less popular among the population.
Learn more about Vietnam War here:
https://brainly.com/question/37209634