I dont know this one sorry
Answer:
i think it was the mandate of heaven
Explanation:
hope this was it :)
The troops tried to send supplies but there was a blockade and they were not able to deliver them.
hope it helped <span />
China is the nation with whom President Nixon normalized diplomatic relations with in 1982 as a way to end United States involvement in Vietnam. The correct option among all the options that are given in the question is the second option. I hope the answer has come to your help.
The answer for this one would Be A because