The mythology of Scandinavia, which was also widespread in Germany and Britain until the establishment there of Christianity. For the people and places most important in Norse mythology, see Odin, Thor, trolls, and Valhalla.
No culture is 'responsible' for Christianity. Christianity is based on the death, burial and resurrection of Jesus Christ.
Roman Catholicism
The most widespread religion is Christianity.
The most widespread religion on earth is Christianity, followed closely by the Baha'i Faith.
The apostle responsible for spreading Christianity among the Jews was Paul.
Many cultures are responsible for the spreading of Christianity. The main culture which spread it was certainly the Roman Empire.
More than likely, God had a lot to do with it.
The role that the disciples played in the development of Christianity included establishment of the church such as that began by Peter.
Thomas was responsible to bring Christianity to India.
He is not responsible for either.
If Christianity is associated with a jingoistic, racist political establishment, it is hindered. Example: The U.S. regime of George W. Bush.