he Cook Islands is a self-governing island country in free association with New Zealand. People inhabited the islands around 1000 years ago and the first European contact took place in 1595. In 1890 the Cook Islands aligned with the United Kingdom and became part of the British Dominions in 1900. The United Kingdom Kingdom incorporated the islands into the colony of New Zealand a year later.
In 1965, the islands became a self-governing territory in free association with New Zealand. In the same year, the House of Ariki, a parliamentary body, was suggested, which was built in 1967. The House of Ariki is made up of 24 Grand Chiefs of the Cook Islands (Ariki). Accordingly, Ra o te Ui Ariki can be translated as "Day of the Great Council of Chiefs".