How did the 3 religions begin

If you are talking about the big 3 religions, Chritianity, Hinduism, and Islam the beginnings are all different.

Explanation:

Christianity with its roots in Judaism, began in the 1st century A.D. after Jesus died in the Roman Empire, it was spread by many of his disciples and other apostles, however, there was a period of time Christians were persecuted. Hinduism started in India in 1500 BC, it is said that this religion was brought by the Aryans. Islam, rooted in both Judaism and Christianity started in 7th century Mecca by Muhammed Ali.