This World History quiz is called 'Cold War: Vietnam - US Intervention, 1965-1973' and it has been written by teachers to help you if you are studying the subject at high school. Playing educational quizzes is a user-friendly way to learn if you are in the 9th or 10th grade - aged 14 to 16.
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High school History covers, amongst other things, the Cold War, which lasted from the end of World War II until the fall of the Soviet Union. One aspect looked at is the intervention of the USA in the Vietnam War.
The government of the USA, under both Johnson and Nixon, became more and more engaged in Vietnam, believing in the "Domino Theory". They thought that intervention in the war was justified because, if South Vietnam fell to Communist aggression, then other neighboring states like Laos, Cambodia and Thailand would fall too.
Explore the Vietnam War, and the intervention of the USA, in this informative quiz.