Why did the europeans develop the manor system and feudalism?

Answer 1

The reason partially was due to the attacks of the vikings; the Lords and Kings provided security

Answer 2

Manorial (sometimes seigneurial or in Marxist parlance, feudal) economy arose from the low level of money, trade and urbanisation in Western Europe following the decline of the Roman Empire. With limited means to govern their lands directly, rulers took to farming out administrative and military functions to individual lords, requiring service from them in return for the right to the surplus produce of a local area and its inhabitants, the manor. The system incorporated some elements of Rome's last centuries, notably a peasantry increasingly bound to the land it farmed and unable to leave. The system assumed its classical form in eighth- and ninth-century France, where the escalating cost of military equipment and the threat of Arab invasion from Spain and the Mediterranean combined to bring into being a highly-professionalised warrior elite supported from their manorial holdings. The Church too enjoyed the fruits of its seigneuries, adding to lits lands bequests by the faithful. The system was notable for its incorporation of an autonomous role for urban communities, intitially as subordinates to king or lord but later as free communes and sometimes as corporate seigneurial landholders in their own right. This proved a spur to the later commercial & urban renewal which would ultimately hasten the manorial order's eclipse.

Answer 3

The reason partially was due to the attacks of the vikings; the Lords and Kings provided security