The time prior to the use of written records.
Answer:
Its "the man in the middle"
Explanation:
1. gulf of tonkin incident
2. truman doctrine
3.containment of communism
probably a little off but it'll lead you in the right direction.
(I was literally learning this a couple months ago and my memory is a little rusty)
Less than a hundred percent
C - They had a rivalry during that time