Answer:
Christianity first appears in Palestine, among the Hebrews, and it's originated in the Jewish religion. The influence of this religion in the Roman Empire, as monotheism as general, effected considerably after the conversion of several emperors to this religion in the first century AD, Christianity became the official religion of the Empire.
Step-by-step explanation:
Initially, it was only a religious movement in the Jewish culture, but it spread for the regions of Asia Minor and Mediterraneo. The milestone which separates Christianity to the Jewish religion is the birth of Jesus Christ. This religion began to be part of the Roman Empire when Palestine was attached to the Empire in the first century AD but only became stronger after Constantine officially consider this religion the Empire's main belief. In 325 AD, Constantine began a policy to approach the State and Christianity. Indeed, while Christianity favored the resistance of the popular strata, it was easily acceptable to the more powerful strata on the other because of the rigid organization of its Church.