Which political provides the best example of tyranny

Definitely B.

Explanation:

The emperor is a tyrant for forcing his opinions on all of his citizens and taking advantage of his power.

B

Explanation: A tyrant is basically a dictator. The definition of dictator is someone who isn't lawfully in power. In this scenario answer b is the best option because all the power is being given to the emperor who can make whatever rules he wants. The reason c isn't the answer is because the queen's power is limited. In my opinion I would phrase answer b a little differently because technically it's a monarchy rather than a tyranny since the emperor is usually the lawful heir, but in this case b would make the most sense.

answer; the period of time known as the middle ages;

it increased the power of the king of england.