How can feudalism be considered a political system

Feudalism can be considered a political system, because the system itself consisted of people being labeled based on class systems. At the top were the monarchy (kings, queens), the ones below them were the nobles who were associated and they received good things like protection and land for their efforts. The ones at the bottom were the peasants or the people who had to work for the landowners with very little political power, and it made up the majority of society.