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.
House of Habsburg
After the death of his father in 1493, Maximilian was proclaimed the new King of the Romans, receiving the name Maximilian I. Maximilian was initially unable to travel to Rome to receive the Imperial title from the Pope, due to opposition from Venice and from the French who were occupying Milan, as well a refusal from the Pope due to enemy forces being present on his territory. In 1508, Maximilian proclaimed himself as the "chosen Emperor," and this was also recognized by the Pope due to changes in political alliances. This had a historical consequence in that, in the future, the Roman King would also automatically become Emperor, without needing the Pope's consent. In 1530, Emperor Charles V became the last person to be crowned as the Emperor by the Pope.