Why did the system of feudalism arise in the middle ages

a. to develop an economic system
b. to determine jobs within the city
c. to defend the countries from attracts
d. to organize the household of noblemen

what group of people depend on what yoy are talking i will still you once you tell me what group of people you are talking about : )

i think i know what group you are talking about so the brahmins

ya i know i wanna was a good night i wanna was a good night i love y’all bye is your address again call tomorrow morning i love ya bye hi hi i’m going crazy about going to the school and i don’t know if y’all want me or not going tomorrow and i’ll tell you what i’m doing and i’ll y’all with this i’m gonna was a really bad thing to say i don’t think i can but i’ll give ya my friend tomorrow night i love you and y’all so i don’t have a lot to say about you haha is this what time you should be home and i’ll give ya my number so i’m sorry i’ll call y’all bye love ya hey