The factor that united various groups of people in Byzantine Empire is the religion – Christianity. Being the first Christian emperor after defeating other Emperors, Maxentius and Licinius of the East, Constantine I implemented the conversion of the Byzantine Empire to Christianity. Although this was not completely accomplished during his reign, Christianity unquestionably happened to be the religion of majority. Because of the common belief and religion of people, the Empire united in carrying out common goals and rejoicing in each victory.