Answer:
do you have some options?
<span>4.The bombing and mining of North Vietnam
</span><span>6.The peace negotiations in Paris
</span>8.The fall of Saigon
So, it might be the Christmas Day bombing of North Vietnam. It was actually a year earlier in 1972.
1. exploitation of foreign regions for natural resources
2. promotion of white superiority
3. the spread of English language in South Asia (although European Imperialism was mentioned in the question and not British)
The answer to this question is a. hope this helps!