In 1977, two-thirds of the Presbyterian Church of Australia, along with most of the Congregational Union of Australia and all the Methodist Church of Australasia, combined to form the Uniting Church in Australia. The third who did not unite had various reasons for so acting, often cultural attachment but often conservative theological or social views. The permission for the ordination of women given in 1974 was rescinded in 1991 without affecting the two or three existing woman ministers. The approval of women elders given in the 1960s has been rescinded in all states except New South Wales, which has the largest membership. The theology of the church is now generally conservative and Reformed. A number of small Presbyterian denominations have arisen since the 1950s through migration or schism. New Zealand In New Zealand, Presbyterian is the dominant denomination in Otago and Southland due largely to the rich Scottish and to a lesser extent Ulster-Scots heritage in the region. The area around Christchurch, Canterbury, is dominated philosophically by the Anglican denomination. Originally there were two branches of Presbyterianism in New Zealand, the northern Presbyterian church which existed in the North Island and the parts of the South Island north of the Waitaki River, and the Synod of Otago and Southland, founded by Free Church settlers in southern South Island. The two churches merged in 1901, forming what is now the Presbyterian Church of Aotearoa New Zealand. In addition to the Presbyterian Church of Aotearoa New Zealand, there is also a more conservative Presbyterian church called Grace Presbyterian Church of New Zealand. Many of its members left the largely liberal PCANZ because they were seeking a more conservative church. It has 17 churches throughout New Zealand. Vanuatu The Presbyterian Church in Vanuatu is the largest denomination in the country, with approximately one-third of the population of Vanuatu members of the church. The PCV was taken to Vanuatu by missionaries from Scotland. The PCV (Presbyterian Church of Vanuatu) is headed by a moderator with offices in Port Vila. The PCV is particularly strong in the provinces of Tafea, Shefa, and Malampa. The Province of Sanma is mainly Presbyterian with a strong Roman Catholic minority in the Francophone areas of the province. There are some Presbyterian people, but no organised Presbyterian churches in Penama and Torba, both of which are traditionally Anglican. Vanuatu is the only country in the South Pacific with a significant