The answer would be D I know this because I took the same test with the same question and I got the answer correct
Number 12 is C and D
Number 13 is Vietnam
Number 15 is Korea
Number 16 is the fall of the Berlin wall
Number 17 is D
It was important because it was marked by extensive discoveries and inventions in Science, Technology, Engineering, Art, Dialectic, Literature, Logic, Mathematics, Astronomy, Religion and Philosophy.
voted and elected AA and White Republicans.