Why did the Roman Empire split in two?
Emperor Diocletian thought that the Empire was too big to be ruled by one person. In AD284 he split the empire in two, appointing Maximian to rule the western part.
Who was the Emperor Constantine?
Constantine was the first Roman emperor to adopt Christianity. His predecessor Diocletian had persecuted Christians, but after his conversion to Christianity in AD312 Constantine encouraged the new religion. He eventually made it the official religion of the Eastern Roman Empire.
By AD330 Constantine decided to make Byzantium the capital of the Eastern Empire, renaming it Constantinople. It is now known as Istanbul, in Turkey. The Eastern Empire grew in power as the Western Empire became weaker.
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