In the Fuedal system an individuals social status was generally determined by what ?

Manorialism was the cornerstone of European society in the Middle Ages. Nobility who held land, the only thing of value during the period, ruled these manors. ...

It was generally characterized by the absence of public authority and the exercise by local lords of administrative and judicial functions formally (and later) performed by centralized governments.

Where I got my answer from:

https://www.britannica.com/topic/feudalism

the anwser is missions

a system of cooperative federalism emerged, as the powers of the federal government expanded.