The statement that best describes what happened when Constantine tried to establish New Rome is: He was successful in building a new political center in the East, unified by the Christian religion.
Even Until today, the residual of Constantine's territory still remained as the center of the christian culture in the world. We most commonly know it as the Vatican city.
Because if their was an even number the votes could be tied.
Expansionist justified the idea of Manifest Destiny because they said they were spreading democracy. They wanted everybody to be live like they do and to be democratic and what better way to do that than by spreading the word to the people living on the land that they already conquered.