it starts by someone making it. or creating it. then the person if he/she is very important it spreads very quickly.
in japan the shinto religion had started
Jesus.
They turned to superstition as well as religion to explain away the causes.
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.
If you wish to believe in the religion of those scriptures, they explain the origins and principles of the religion.
Islam.
KKK
Muhammad did.
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