User blog comment:LurkerLordB/Religion in a world without Christianity/@comment-4206034-20120424221312/@comment-1630894-20120424230614

Judaism is unlikely to grow in Europe. It is restricted primarily to the Jewish ethnicity, with the few large converts in OTL being due to Christian and Muslim monotheistic religion. Without Christianity, I imagine that the Germanic pagan religions would not die out, and remain practiced by Germanic peoples. India would most inevitably be primarily Hindu or Buddhist, with perhaps Zoroastrian influence in OTL Pakistan. As for being more advanced, as people have mentioned, the teachings of ancient Greece and Rome certainly wouldn't have been as surpressed in Europe, so that is possible.