Which major global conflict was the US primarily involved in during the 1960s and 1970s?

The Vietnam War is the correct answer because it was a significant military conflict in which the United States was deeply involved during the 1960s and 1970s. This war stemmed from the larger context of the Cold War, as the US sought to contain the spread of communism in Southeast Asia. American involvement escalated with the Gulf of Tonkin Resolution in 1964, leading to a substantial deployment of troops and resources. The war had profound effects on American society, politics, and foreign policy, including widespread protests and a reevaluation of US military engagement.

The other conflicts mentioned, such as World War II, Korean War, and the broader Cold War context, were not the primary focus of US military efforts during that specific timeframe. World War II ended in 1945, and the Korean War took place primarily in the early 1950s. While the Cold War influenced US actions throughout the decades, it did not involve direct military conflict in the same manner as the Vietnam War during the 1960s and 1970s.