Question

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

Answer 1

Answer:

If you're asking for the name of this system, it's the Feudal System

Answer 2

Answer:

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:

hope this helped