You can plant a bush or tree in your garden that grows it, or pick it from the trees around town, and usually people give out food even if you're not in the mood to compliment them because it's a delight to see people enjoy your cooking, but I suppose if you offended everyone you might be stuck relying on what you could grow and gather personally.
It'd be hard to forage anywhere near a city and dangerous to wander into the wilderness at home, I guess there's just enough food around here that that's not a factor.
It'd depend on the circumstances quite a bit but they might starve, if enough other things about them were unfortunate.
The previous Emperor dies having declared one the heir. By custom that would usually be the eldest son, but it doesn't technically have to be.
That would work in a democracy but the Imperium isn't one, so they can just live with it or try to organize a rebellion. Or maybe if they're important or have the ears of important people they can try to convince the Emperor to abdicate in his heir's favor early.
In whose favor? Fëanáro's too young, I suppose someone could sit regent for him...
How would you decide who was qualified? There are countries in my world where they vote on leaders...
I suppose. It would probably have not worked with the sorts of people on my world anyway.
It's not that he woke up one day and thought, 'The best thing to do with being Emperor is to kill people'; it's that Emperors themselves as a group are often targets of violence, or at least they would be if there were fewer deterrents. People try to kill him now and then even knowing that if they're caught he will live and they won't. I imagine more people would try if it weren't the case.
The policy according to which he might kill me if I appeared in his palace is the principle that people who appear suddenly in his palace are more likely to be there for violent reasons than harmless ones.