Christianity can be said to have started with Peter's preaching on the Day of Pentecost, in AD 30, in Jerusalem.
Christianity.
He was originally a Jew but turned to Christianity.
The Christianity of the western part of the Roman Empire was originally called Western or Latin Christianity. Later it came to be called the Catholicism.
Christianity started with Jesus Christ and his followers. They originally were Jewish but "branched off" to form a religion that accepted non-Jews.
Judaism & Christianity started with God's Covenant with Abraham.
Jamestown
The ideas of Christianity started in Judea with the teaching of Jesus Christ.
It is generally believed that St Patrick brought Christianity to Ireland. However, Patrick was born in Wales and so one can assume that the Welsh originally brought Christianity to Ireland.
Rome is important in Christianity because when the Romans converted to Christianity, they insisted on making Rome the centre of Christianity. Originally the true centre of Christianity is in constantinople. This action by the Romans caused what is known as a schism in Christianity. The first schism where it was split into roman catholics and Russian orthodox denominations.
Israel.
No it did not. It started in Judea.
They are originally from Chicago.