Make your own conclusion/thesis using the book, and with analysis from at least two primary sources. You may consider such topics as differences between traditional Roman religion and Christianity, the religious, military, social and political impact of this new religion, the benefits and/or burdens of monotheism in the later Roman age, Christianity and the roman state, women in Christianity, Roman Christians, and the influx of barbarians, etc.
Discuss that short and long term effects of Christianity in the Roman Empire