The positives were that you actually had a home and the negative was that you had a part of the military. another positive was that you had to chance to cultivate the downside was that you had to give a set amount of your harvested crops to your duke/duchess or whoever owns said land. I hope this will give you some pros and cons to feudalism
Population. State must have people, the number of which does not directly to relate to its existence.
Territory. A state must be comprised of land, Territory with known and recognized boundaries.
Sovereignty. ...
Government.
