Answer:
1.A Lord would be given land by the king in return for homage or a promise to serve the king when called upon.
4.A vassal depended on the agricultural production of serfs to feed the whole system.
5.A king would hire a vassal to provide an army and political advice during times of war.
Explanation:
Feudalism is the denomination of the predominant political system in Western Europe of the middle centuries of the Middle Ages (between the ninth and fifteenth centuries, although there is no agreement among historians about its beginning and duration, and this varies according to the region), And in Eastern Europe during the Modern Age, characterized by the decentralization of political power; to be based on the diffusion of power from the top (where in theory were the emperor or kings) to the base where local power was exercised effectively with great autonomy or independence by an aristocracy, called nobility, whose titles derived from governors of the Carolingian empire (dukes, marquises, counts) or had another origin (barons, knights, etc.).