Constantine's "New Rome" was established at the site of ancient Byzantium which became Constantinople. The city of Constantinople when conquered by the Ottoman's took its modern name of Istanbul in 1923.
Constantine's 'new Rome' was established at the site of the ancient town of Byzantium, which he renamed Constantinople in 330 CE. This strategic location became the capital of the Roman Empire and later the Byzantine Empire. The correct answer is A. Byzantium.
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