Answer:
NVA
Explanation:
https://www.answers.com/Q/Who_were_South_Vietnamese_who_supported_the_North_Vietnamese_during_the_Vietnam_War
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This was known as the Freedom summer
It was an initiative to get as many African-Americans to vote as possible in the elections in Mississippi. The initiative was organized because they had historically been segregated and were not allowed to vote through various means even when they did have constitutional rights to do so, ever since the civil war.