Where does Christianity first spread?
Christianity began as a Second Temple Judaic sect in the 1st century in the Roman province of Judea, from where it spread throughout and beyond the Roman Empire.
When did Christianity start in India?
It is commonly believed that Christianity came to India with St Thomas as early as 52 CE. He is said to have landed in Kerala and the religion took root there. He then walked across to Mylapore in present day Chennai, spoke of a new God in a new land, and left his footprints on the sands of time.