Every monarchy runs on one fuel, and it isn't gold, or land, or divine right.
It's babies. That's the whole game, start to finish.
You conquer a kingdom, you build a castle, you sit on a throne, and then you produce an heir so the whole damn circus keeps spinning after you're gone.
The Tudors understood this so well they beheaded wives over it.
The Habsburgs married their own cousins for centuries to keep the bloodline sealed tighter than a submarine hatch.

Music used in the video:
Pendulum Waltz by Audionautix is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/...
Artist: http://audionautix.com/