According to Johnson, for which of the
following reasons are our soldiers fighting in
Vietnam?
A. To stop North Vietnam from taking over
South Vietnam
B. To help South Vietnam from having
communism forced upon it
C. American needs to take a stand against
communism in Asia
D. All of the above are reasons why we
have soldiers in Vietnam

US soldiers fought in Vietnam to prevent North Vietnam from taking over, aid South Vietnam against communism, and counter the spread of communism in Asia.

Explanation:

The soldiers in Vietnam were fighting for several reasons:

To stop North Vietnam from taking over South Vietnam: Preventing the spread of communism and preserving South Vietnam's independence were significant factors.
To help South Vietnam from having communism forced upon it: The US aimed to support South Vietnam against communist influence and aggression.
American needs to take a stand against communism in Asia: Part of Cold War strategy involved opposing communism wherever it emerged.

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