The two answers are as follows
"he was afraid that diem's defeat would cause communism to spread to other parts of asia"
and also
he did not want chi minh, a communist, to gain control of south vietnam
Answer:
better to explain
Explanation: they were getting to be stable again and they did not need to trade with Europe anymore so they decided not to trade with them anymore.
Its true ! Because what I'm thinking is its the basis of Democracy .