The Christian view point is this:
"Jesus dying on the cross and rising from His grave. People witnessed it, and many came to believe."
The historians view point is this:
"Christianity was a religion evolved from the Ancient Egyptian Religion of Sun worship between 2 and 3 thousand years ago. "
First it is important to point out that Jesus Christ as worshipped by Christians has only ever appeared in religious texts which are not considered to be a reliable source of history by main stream historians. He has never appeared in any actual historical documents and so there is considerable doubt as to whether he actually existed as described in The Bible at all.
As far as the origin of Christianity goes there are many documents I can reference but the documentary "Zietguist" does this for us very well so I will quote a summary from the text:
"Furthermore, the character of Jesus, a literary and astrological hybrid, is most explicitly a plagiarization of the Egyptian Sun-god Horus.For example, inscribed about 3500 years, on the walls of the Temple of Luxor in Egypt are images of the enunciation, the immaculate conception, the birth, and the adoration of Horus. The images begin with Thaw announcing to the virgin Isis that she will conceive Horus, then Nef the holy ghost impregnating the virgin, and then the virgin birth and the adoration.This is exactly the story of Jesus' miracle conception. In fact, the literary similarities between the Egyptian religion and the Christian religion are staggering."
I recommend you watch the whole movie or read the transcript for more complete information.
Christianity originated in europe
it was originated in judea (present day israel)
Odd question, the answer is no, Catholicism is Christianity.
Neither Christianity nor Isalm orignated in Europe. Christianity Originated in Judea (modern day Israel) and Islam originated in Mecca (modern day Saudi Arabia)
the religon that originated in the roman empire is Christianity
Christianity originated in Judea, which is in modern day Israel.
Sikhism originated in 15th century AD, Christianity originated in 2000 BC. Therefore, Sikhism came about 1500 years after Christianity.
Christianity began in Jerusalem, the nation of Israel, in the Middle East.
Judaism is where Christianity had originated from. The Religions as far as god start from the Jewish, then to Christianity, which branches to Catholicism which then branches to all kinds of Christian faiths. But, to answer the question bluntly, it started with Judaism.
Christianity was introduced by Spanish settlers when they arrived in Jamaica in1509. Christianity originated in different forms or versions over several centuries.
Both Islam and Christianity originated out of Judaism.
Christianity originated in Israel where Jesus of Nazareth lived and preached.