I went with antiquity because I've always been just enthralled with anything to do with ancient greece (history, philosophy, drama, military history, etc.) which carries over to much of ancient Rome too. Aristophanes, Plato/Socrates, Homer, Virgil, Cicero, Aeschylus... *Goosebumps*
I don't know too much about the Three kingdoms, but what I do know I find interesting at least (mostly learned from video games

). It's something I'd definitely be willing to learn more about.
Middle ages would be next because I'm a sucker for western european history too (it's waht originally got me interested in fantasy). I will never bet against the Greeks, however

.