What are some things that australia and new zealand have in common

"Both countries are Commonwealth realms sharing the Head of the Commonwealth as Head of State in universal suffrage supported systems of Westminster representative parliamentary democracy within a constitutional monarchy. Their only land border defines the western extent of the Ross Dependency and eastern extent of the Australian Antarctic Territory. They acknowledge two distinct maritime boundaries conclusively delimited by the Australia – New Zealand Maritime Treaty of 2004. The microcontinent Zealandia, of which present-day New Zealand represents the largest unsubmerged part, probably separated from Antarctica between 130 and 85 million years ago and then from the separate continent of Australia 60–85 million years ago in the breakup of East Gondwana occurring in the Cretaceous and early Paleogene geologic periods. Zealandia and Australia together are part of the wider regions known as Oceania and Australasia. Australia, New Zealand's North Island and the northwest of the South Island are on the Indo-Australian Plate, with the remainder of the South Island on the Pacific Plate."

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