I believe the answer is: Power would need to be distributed to several branches of the government so that the power of one branch could be checked by the other branches,
when we separate government power like this, one branch of the government could make an intervention if the other branch is trying to do something that is unconstitutional. This would prevent the government from transforming into a tyranny, where the head could pass every legislation as he please.
<span>An example of a Monarch during the Middle Ages is Eleanor of Aquitaine. </span>
Because as people were traveling it was easy for them to access all of the goods.
It's like the judge that has full and total power