Question

Which statement best describes what happened when Constantine try to establish new rome

Answer 1

I don't know in which order do your options go but the correct answer is:
He was successful in building a new political center in the East, unified by the Christian religion.

Constantine the Great established "New Rome" which he called Constantinople. Constantinople was first the capital of Roman and later the Byzantine empire before it fell to the Turkish invaders and was renamed Istanbul.  Constantine managed to build a new Christian center that stood for a long time.