Pearson Edexcel · GCSE · History
Course version: 1HI0 · Version from Sept 2016
Key topic 3: US involvement in the Vietnam War, 1954–75 - 4 Changes under…
Full specification wording
Option 33: Key topic 3: US involvement in the Vietnam War, 1954–75 - 4 Changes under Nixon, 1969–73: Attacks on Cambodia (1970) and Laos (1971), and the bombing of North Vietnam (1972).
Despite withdrawing ground troops, Nixon expanded the conflict geographically to pressure Hanoi.
Checked against the Pearson Edexcel 1HI0 specification (opens in a new tab) on .
- Point 3 of 3
Study notes
From the checked teaching notes for this specification point.
The idea
Despite withdrawing ground troops, Nixon expanded the conflict geographically to pressure Hanoi. In 1970, US and ARVN forces invaded Cambodia to destroy Vietcong bases and disrupt the Ho Chi Minh Trail, sparking massive US protests. In 1971, ARVN troops, supported by US air power, attacked Laos to further sever communist supply lines. They suffered heavy casualties, highlighting the flaws of Vietnamisation. In 1972, following the North Vietnamese Easter Offensive, Nixon ordered Operation Linebacker, a massive bombing campaign against North Vietnam. This intense aerial bombardment targeted infrastructure and supply routes, aiming to force North Vietnam back to the negotiating table and demonstrate continued US commitment to defending the South.
What earns the marks
- Describe the 1970 invasion of Cambodia as an attempt to destroy communist sanctuaries and supply routes.
- Explain the 1971 attack on Laos, noting it was an ARVN ground operation with US air support that ultimately failed.
- Detail the 1972 bombing of North Vietnam (Operation Linebacker) as a response to the Easter Offensive and a tactic to force negotiations.
- Analyse the contradictory nature of Nixon's strategy: expanding the war geographically and aerially while withdrawing US ground troops.
Common mistakes and how to put them right
Stating that US ground troops led the invasion of Laos in 1971.
Put it right: Specify that US Congressional legislation banned US ground troops from entering Laos; therefore, the ARVN conducted the ground assault.
Confusing Operation Rolling Thunder with Operation Linebacker.
Put it right: Distinguish between Johnson's earlier, restricted bombing campaign (Rolling Thunder) and Nixon's more intense 1972 campaign (Linebacker).
Assuming the attacks on Cambodia and Laos successfully stopped communist infiltration.
Put it right: Explain that these operations only temporarily disrupted supply lines and ultimately failed to close the Ho Chi Minh Trail.
Exam tips
- Use the attacks on Cambodia and Laos as evidence when evaluating the success or failure of Vietnamisation.
- Discuss the domestic backlash in the US caused by the invasion of Cambodia, particularly the Kent State shootings.
Try the lesson
The start of the Option 33: Key topic 3: US involvement in the Vietnam War, 1954–75 - 4 Changes under Nixon, 1969–73: Attacks on Cambodia (1970) and Laos (1971), and the bombing of North Vietnam (1972). lesson, made from checked teaching notes for this specification point.
Have a go first
What was the main military objective of the US and ARVN attacks on Cambodia in 1970 and Laos in 1971?
Listen
Despite withdrawing ground troops, Nixon expanded the conflict geographically to pressure Hanoi. In 1970, US and ARVN forces invaded Cambodia to destroy Vietcong bases and disrupt the Ho Chi Minh Trail, sparking massive US protests. In 1971, ARVN troops, supported by US air power, attacked Laos to further sever communist supply lines. They suffered heavy casualties, highlighting the flaws of Vietnamisation. In 1972, following the North Vietnamese Easter Offensive, Nixon ordered Operation Linebacker, a massive bombing campaign against North Vietnam. This intense aerial bombardment targeted infrastructure and supply routes, aiming to force North Vietnam back to the negotiating table and demonstrate continued US commitment to defending the South. A strong answer earns marks for these points. Describe the 1970 invasion of Cambodia as an attempt to destroy communist sanctuaries and supply routes. Explain the 1971 attack on Laos, noting it was an ARVN ground operation with US air support that ultimately failed. Detail the 1972 bombing of North Vietnam (Operation Linebacker) as a response to the Easter Offensive and a tactic to force negotiations. Analyse the contradictory nature of Nixon's strategy: expanding the war geographically and aerially while withdrawing US ground troops. A common slip: Stating that US ground troops led the invasion of Laos in 1971. Instead, Specify that US Congressional legislation banned US ground troops from entering Laos; therefore, the ARVN conducted the ground assault. Exam tip: Use the attacks on Cambodia and Laos as evidence when evaluating the success or failure of Vietnamisation.
Put the events in order
Put these events in the order they happened, earliest first.
- 1. US and ARVN forces invaded Cambodia
- 2. Nixon ordered Operation Linebacker bombing North Vietnam
- 3. ARVN troops attacked Laos with US air support
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