I want to create some universe/backstory that makes an existence of a feudal form of gevernment for a space empire reasonable. Under what conditions it would be the best/acceptable model of government? Or what causes the government type to not change to another (more efficient) form? Why feudal and not republic/democracy/absolute monarchy/dictatorship/tyrany?
I would prefer to avoid space navigation reasons (like the empire is very big and it takes thousand years to reach the far end).
The structure of the space empire should be, more or less, like this (if possible):
- emperor (probably also a head of a noble house, so he is not just one person but has a whole family and core followers behind)
- 5-6 major noble houses (and possibly some smaller ones; but still they are not single nobles fighting each other, they act (usually) as a united noble house, at least that how it appears on the outside)
- some powerful guilds/organizations (probably interested in commerce or other goals that do not include usurping the imperial throne)
- common population