What were the positive and negative effects of rule by feudal lords

Feudalism is a government system wherein a nation or state is distributed into regions. Each region is ruled by a ‘feudal lord’ who is a noble and pledges loyalty to the monarch.
Its pros are the following: *There is always a job for anyone when needed. *Since there are regions, the feudal lords could protect the region they are assigned to, to any potentials robberies or dangers.
Its cons are the following: *Power and authority can be abused and people hoping for change would be threatened. *Regions are isolated amongst one another hindering growth to people to explore to other regions.