Roman Emperors · Question
Which emperor founded Constantinople (modern Istanbul)? (r. 306-337 AD)
Answer
Constantine I
The story behind the answer
Constantine I (r. 306–337) refounded the ancient Greek city of Byzantium as Constantinople in 330 AD, making it the new capital of the Roman Empire. He chose the site for its commanding position over the Bosporus, linking Europe and Asia and controlling key trade and military routes. The city would become the vibrant heart of the later Roman (Byzantine) Empire for over a thousand years.
Context: Constantine ended the Tetrarchy, legalized Christianity with the Edict of Milan (