Most history books will tell you that the Roman Empire fell in the fifth century CE, but this would’ve come as a surprise to the millions who lived in the Roman Empire through the Middle Ages. This Medieval Roman Empire, today called the Byzantine Empire, began when Constantine, the first Christian emperor, moved Rome's capital. Leonora Neville details the rise and fall of the Byzantine Empire. Lesson by Leonora Neville, animation by Remus & Kiki.