Question

Why did vassals have to serve lords? Pls help

Answer 1

The vassals had to serve lords because he promised to serve a lord in exchange for land.

Explanation, if the lords didn’t go along with his promise, they would probably have nobody to work for the lord.

Answer 2

The vassals had to serve lords because he promised to serve a lord in exchange for land. ... I think that the lords benefited more from feudalism because of the systems of promises that governed the realtionships between lords and the vassals