I'm not sure this is the best subreddit for your question since it is extremely broad and you seem to be asking about current religious differences. You may want to try asking in a subreddit like /r/religion or in subreddits devoted to a specific religion (/r/Christianity, /r/islam, /r/Buddhism, etc.).

Alternatively, you could maybe rephrase your question if your intent was to understand specific historical differences.

This post has been removed; as noted, this is not a history question and would be more appropriate in a sub specializing in comparative religion.