I think the most important factor is the class. The working people most likely were in unsafe working conditions or died from hard labor.
Initiate revenue bills, impeach federal officials, elect president in lieu of electoral tie, place holds on laws, consent to treaties, confirming appointments of federal executive officers, waive its own rules by unanimous consent, review, approve, and reject presidential appointees to executive and judicial branch posts, conduct investigations of malfeasance in executive branch, punish its own members for disorderly conduct and expel them with concurrence of 2/3s of votes
The primary characteristic of a feudal society is the exchange of land for services.
The overlord will grant the vassal a land in exchange for the vassal's services. Services like fighting beside the lord in terms of war. Vassals have their own men and since the vassal is at the service of the overlord, his men is also at the service of the overlord.
