Answer:
From 1968 on, the Soviet Union provided the vast majority of the military and economic aid that North Vietnam received. They supplied their communist allies with food, petroleum, transport vehicles, iron, steel, fertilizer, arms, and ammunition
Explanation:
I believe the answer is smallpox, but I could be mistaken. There were lots of viruses threatening the population at the time but from what I know, smallpox was the largest threat.
<span>reedom for the people and this is a true answer to all</span>