What is the containment line of Vietnam?

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Explanation:

The doctrine of containment argued that all-out war should be avoided, but the US should pledge itself to stop any new communist governments, or preventing any existing communist governments from expanding.

Explanation:

Your welcome

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.

presidency should be the title