Because people didn't know why things were like they are, or what had caused them. I.e. "What created the universe/earth/humans/animals/plants etc."
Islam, a religion founded by the prophet Muhammad started in AD 622.
Jesus.
in japan the shinto religion had started
Buddhism is the religion that started in India(sub-continent) and spread over china.
Jesus never started a religion.
He started a whole new religion. I believe that this is a good religion.
Islam.
KKK
Muhammad did.
All major religions started in Asia.
Calvinism started in the later seventeenth century. There is not a parcific date as to when they started calling the religion calvinism. but it was refered too as a religion back in the day.
the religion is so old that nobody knows who started the religion but people have got an idea how long ago it started