Do you have a favorite historical period/conflict/person/thing to study?

I'm a big history buff myself and I've always found the Crusades interesting for how much it shaped everything that came after. It was horrific and awful and unjustified, but very interesting to study the facets of. From the concept of holy war to the enforcement of powerful extranational entities influencing national politics and function to even the foundation of modern banks, so much was born out of those incredibly bloody conflicts whose influence is still with us in the modern day nearly a thousand years later.

I also find the Roman Empire's rise, its schism into East and West and Rome's eventual fall and then the later flourishing of the Byzantine Empire similarly interesting as well as the rise of the Holy Roman Empire. Japan from the Feudal Period to Meiji Restoration was also quite interesting for just how very unique so many aspects of it were. All those to a bit of a lesser degree than the Crusades though.