Christianity in Australia and Oceania derives largely from British settlers on the subcontinent. Christianity is now Australia's main religion.
"Christianity has developed in Australia and New Zealand along broadly similar lines. Such similarities include the occurrence of colonization at about the same time, largely by emigration from the British Isles; the early presence of major Christian denominations, both locally and in extending missionary activity in the South Pacific; periodic sectarian strife; and, by the end of the twentieth century, the clearly evident effect of secularizing influences. Important differences include the much greater geographical extent of Australia, the situation of the respective indigenous inhabitants, and the partly different ethnic background and denominational affiliations of immigrants."