As an official religion, it started in Rome.
In the region of palestine.
The Middle East, specifically the Levant region.
Iraq
Palestine is a region that includes parts of several countries in southwest Asia.
Palestine.
Palestine
Currently its the area known as Israel.
Palestine is considered the birthplace of Christianity because it is the region where Jesus Christ was born, lived, preached, and was crucified. Key sites such as Bethlehem, Nazareth, and Jerusalem are central to the Christian faith, as they are associated with significant events in Jesus' life. The early Christian community also emerged in this area, with the apostles spreading Jesus' teachings throughout the region and beyond. Thus, Palestine holds deep historical and spiritual significance for Christians worldwide.
In the region of Israel, which was called Palestine at that time.
The area where Jesus lived was Palestine.
Jerusalem is located within the Judean Highlands region of Israel/Palestine, which is part of the Levant region, within the wider Middle East.