The correct answer is D. After he became Lord Protector, Oliver Cromwell ruled as a military dictator.
Oliver Cromwell was an English political and military leader. He converted England into a republic called the Commonwealth of England.
During the first forty years of his life he was no more than a middle-class landowner, but he ascended in a meteoric way until he commanded the New Model Army and, in the long run, imposed his leadership over England, Scotland and Ireland as Lord Protector, from the December 16, 1653, until the day of his death. Since then he has become a very controversial figure in English history. For some historians, such as David Hume and Christopher Hill, he was no more than a regicidal dictator.
