Now, many of you are probably familiar with some of the key actors within the feudal system. At the top, you would have a king. Now, the king would rule over a kingdom. Now, this is not so easy to govern, especially during the Middle Ages, and the king might owe many people things, especially people who helped the king come to power, helped him depose the previous king or to conquer this land. And so in exchange for that and to help govern, he might grant land or feasts to other people. And the key currency in the Middle Ages under the feudal system is land, and land in exchange for loyalty and service. So this whole thing is a kingdom.