A system of political organization in medieval Europe in which a vassal gave service to a lord
and received protection and land in return

Feudalism was the leading way of political and economic life in the Medieval era. Monarchs, like kings and queens, maintained control and power by the support of other powerful people called lords. ... The feudal system broke down in the 13th and 14th centuries following massive abuses.

Explanation:

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when in doubt choose c

it's what my teacher told my class when we were going into psats

he was able to speed up production of the processing of seeds