Question
What country had been involved in Vietnam for almost a century before the United States?
Answers
GPT-4o mini
France had been involved in Vietnam for almost a century before the United States became significantly involved in the Vietnam War. France established colonial rule over Vietnam in the mid-19th century and maintained control until the mid-20th century, specifically until the First Indochina War, which ended in 1954. The U.S. involvement in Vietnam intensified in the late 1950s and escalated in the 1960s.