Which cities was known as the byzantine empire's economic and religious center

In 324 Constantine, the very first Christian emperor began to be the sole ruler of the Roman Empire. He made his Eastern headquarters at the Ancient Greek colony of Byzantium in 330. The city was renamed Constantinople after its founder, and was also coined as the "new Rome".
I hope this was the answer you were looking for, and my apologies if it wasn't. Good luck on your assignment :)

Ithink its bill of rights