History of the Roman Empire
Theodosius was the last Emperor who ruled over the whole Empire. After his death in 395, he gave the two halves of the Empire to his two sons Arcadius and Honorius; Arcadius became ruler in the East, with his capital in Constantinople, and Honorius became ruler in the West, with his capital in Milan and later Ravenna. The Roman state would continue to have two different emperors with different seats of power throughout the 5th century, though the Eastern Romans considered themselves to be the only ones who were fully Roman. Latin was used in official writings as much as, if not more than, Greek and the two halves were nominally, culturally and historically, if not politically, the same state.
Imperial cult of ancient Rome
Constantine's nephew Julian, Rome's last non-Christian emperor, rejected the "Galilean madness" of his upbringing for a synthesis of neo-Platonism, Stoic asceticism and universal solar cult and actively fostered religious and cultural pluralism. His restored Augustan form of principate, with himself as "primus inter pares", ended with his death in 363, after which his reforms were reversed or abandoned. The Western emperor Gratian refused the office of "pontifex maximus" and, against the protests of the Senate, removed the altar of "Victoria" (Victory) from the Senate House and began the disestablishment of the Vestals. Theodosius I briefly re-united the Western and Eastern halves of the Empire, officially adopted Nicene Christianity as the Imperial religion and ended official support for all other creeds and cults. He refused to restore "Victoria" to the Senate House, extinguished Vesta's sacred fire and vacated her temple. Even so, he accepted address as a living divinity, comparable to Hercules and Jupiter, by his overwhelmingly pagan Senate. After his death the sundered Eastern and Western halves of Empire followed increasingly divergent paths: nevertheless both were Roman and both had emperors. Imperial ceremonial – notably the Imperial "adventus" or ceremony of arrival, which derived in greater part from the Triumph – was embedded within Roman culture, Church ceremony and the Gospels themselves.