Answer:
Be a citizen of an extremely large territory.
Step-by-step explanation:
The description of an empire is, a political unit made up of a vast expanse of territory that is under the direction of a single ruler. So there most likely wouldn't be elected leaders if there is a single ruler.
Empires are big and there is no evidence that you would be able to walk across your empire in a week
I don't think you would likely serve in the military because not all empires have a military and you only would if you want to be a warrior.
I think it is to be a citizen of an extremely large territory because for instance, in the articles I found, "As the state grows larger, the leaders decide they want more territory. They might need the extra land to grow enough food to feed a larger population; the neighboring states may appear to be getting too powerful; or maybe the leaders are simply greedy for more land."
It keeps talking about expanding territory, so I hope this is right and i hope it helps!