I think the answer is letter D house minority whip.
The other choices are more involved with the foreign policies. The house minority whip can be a leader in a political party who is far from having an influence in the implementation of a foreign policy.
The Dark Ages were from 400-1400. It was called that because of the deterioration of the economies in Western Europe after the fall of the Roman Empire :)
Salem witch trials began in 1892.
