Explain how events following the end of the Vietnam war cast a new light on the domino theory?

The Domino theory was proven right after Vietnam when similar uprisings and wars happened in Cambodia Laos Thailand and Malaysia.

Explanation:

Cambodia Laos Thailand and Malaysia are neighboring nations to the state of Vietnam that saw one of the most gruesome wars of its time.

This is followed by similar militias forming in these batons too and some erupting into a full blown war by the sponsoring of the two great superpowers

of the time.

This was good evidence for the fact that it in fact is true that one event in one place can cause a similar event in another neighboring place.

This was the essential doctrine of the Domino theory.

The US policy in 1964.

Explanation:

the answer is a, salt plain