The answer to this question is B Connecting the past and present. This is because he says "Those who cannot learn from history are DOOMED TO REPEAT IT." This would mean go back in the past.
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)
Points.........................................
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