Which statement best describes what happened when constantine tried to establish "new rome"?

he brought the western empire under his control and established an empire in italy that prospered.
he was not able to establish "new rome" because western rome's armies were too strong and maintained control.
he was overthrown by a foreign prince, and his new empire crumbled under the prince's poor leadership.
he was successful in building a new political center in the east, unified by the christian religion.