Doesn't know the word emperor, huh? Rosinante frowns a little, but figures it just didn't translate right.

"A ruler. Like a king or queen, but of many countries all at once," he tries again. "Head of a huge government overseeing hundreds of thousands of people."

The number is a complete guess. Maybe it's more than that, come to think of it, since they have so much land on that world given what he's heard about it. Doesn't really matter, anyway, since it's not like anyone's going to win contests here for how many people they used to command when they were alive.