New Zealand remembers Waitangi Day. In 1840 the Maori and the Europeans signed the Treaty of Waitangi, permitting Great Britain to develop New Zealand. About the size of the state of Colorado, New Zealand is comprised of mostly mountains with some coastal plains. Slightly over four million people live on the islands. Wellington is the capital. The country exports dairy products, meat, wool, and wood products. The kiwi is native to New Zealand.