What religion was followed before Christianity and Islam?

It is said that Hinduism is the oldest religion in world. "Hindu synthesis" started to develop between 500 BCE and 300 CE, after the Vedic times. Hinduism religion follows idol worship. read more

But now if you see the world population, you will find that Christianity claims 33% of the world's population, Islam comes with 21%,Hindu comes with 15% and Judaism has 0.2% only. So its an interesting fact that a religion which was followed before Christianity and Islam just has 0.2% human follower existence. read more

Christianity and Judaism had made some small inroads, but were very much the minority of the region and did not appear to reach Mecca except from an extremely small number of tradesmen (prior to the revelation of Islam there are only 2-3 documented cases where Muhammad met with a Christian). read more