Why can the three Abrahamic faiths live in peace like they did thousands of years ago ?
Actually, you are both factually and chronologically incorrect. 1. Thousands of years ago, the only Abrahamic faith around was Judaism. Per the records of the Jews, even they did not get along with one another, hence the division of the Kingdom of Israel and the Kingdom of Judah. 2. When Christianity began, it was not embraced by Judaism, but severly persecuted by it. 3. When Islam was introduced, they physically conquered the Christian and Jewish lands. Not exactly peacable. Without a doubt, the most peaceful coexistence of Christianity, Judaism, and Islam in all of history is found in modern times, in the United States and other western nations.