The Byzantine Empire: The Byzantine Empire was the powerful empire in the fourth century. It was present from the river Euphrates to the British Isles in the West side, and in the North, it covered the vast areas of coastal area of Africa. The great empire was the Christian empire also known as the Roman Empire. The Empire went on influencing the vast area and was the only dominant power I the world along with the Persian as a second power in the world. The Byzantine Empire ruled over the worlds for more than thousands of the year but with the passage of the time, new powers started emerging and the Byzantine Empire started to shrink and in the last days, it only consisted of Constantinople, the capital of the empire and the famous city of Turkey, now known as Istanbul.