Does New Zealand belong to Australia or Europe?

New Zealand belongs to Australia. New Zealand is located in the southwest Pacific Ocean, about 1600 km southeast of Australia, between Antarctica and the equator, facing Australia across tasman sea in the west, and bordering New Caledonia, Tonga and Fiji in the north. Wellington, the capital, and Auckland, the largest city, are located in the North Island. The political system is a parliamentary monarchy.