Independence of New Zealand in the context of "Monarchy of New Zealand"

New Zealand is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island (Te Ika-a-Māui) and the South Island (Te Waipounamu)—and over 600 smaller islands. It is the sixth-largest island country by area and lies east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps (Kā Tiritiri o te Moana), owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland.

The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and subsequently developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1769 the British explorer Captain James Cook became the first European to set foot on and map New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs signed the Treaty of Waitangi, which paved the way for Britain's declaration of sovereignty later that year and the establishment of the Crown Colony of New Zealand in 1841. Subsequently, a series of conflicts between the colonial government and Māori tribes resulted in the alienation and confiscation of large amounts of Māori land. New Zealand became a dominion in 1907; it gained full statutory independence in 1947, retaining the monarch as head of state. Today, the majority of New Zealand's population of around 5.3 million is of European descent; the indigenous Māori are the largest minority, followed by Asians and Pasifika. Reflecting this, New Zealand's culture mainly derives from Māori and early British settlers but has recently broadened from increased immigration. The official languages are English, Māori, and New Zealand Sign Language, with the local dialect of English being dominant.

The Realm of New Zealand is the area over which the monarch of New Zealand is head of state. The realm is not a federation but is a collection of states and territories united under its monarch. New Zealand is an independent and sovereign state that has one territorial claim in Antarctica (the Ross Dependency), one dependent territory (Tokelau), and two associated states (the Cook Islands and Niue). The Realm of New Zealand encompasses the three autonomous jurisdictions of New Zealand, the Cook Islands, and Niue.

The Ross Dependency has no permanent inhabitants, while Tokelau, the Cook Islands and Niue have indigenous populations. The United Nations formally classifies Tokelau as a non-self-governing territory; the Cook Islands and Niue are self-governing. The governor-general of New Zealand represents the monarch throughout the Realm of New Zealand, though the Cook Islands have an additional king's representative.

The monarchy of New Zealand is the constitutional system of government in which a hereditary monarch is the sovereign and head of state of New Zealand. The current monarch is King Charles III, who has reigned since 8 September 2022.

The Treaty of Waitangi between Queen Victoria and Māori chiefs (rangatira) was signed on 6 February 1840. This laid the foundation for the proclamation of British sovereignty over New Zealand on 21 May 1840; the British monarch became New Zealand's head of state. The country gradually became independent from Britain and the monarchy evolved to become a distinctly New Zealand institution, represented by unique symbols. The individual who is the New Zealand monarch is currently shared with 14 other countries (realms) within the Commonwealth of Nations, in each of which the monarchy is legally separate. As a result, the current monarch is officially titled King of New Zealand (Māori: Kīngi o Aotearoa) and, in this capacity, he and other members of the royal family undertake various public and private functions across the Realm of New Zealand. The King is the only member of the royal family with any constitutional role.

The constitution of New Zealand is the sum of laws and principles that determine the political governance of New Zealand. Unlike many other nations, New Zealand has no single constitutional document. It is an uncodified constitution, sometimes referred to as an "unwritten constitution", although the New Zealand constitution is in fact an amalgamation of written and unwritten sources. The Constitution Act 1986 has a central role, alongside a collection of other statutes, orders in Council, letters patent, decisions of the courts, principles of the Treaty of Waitangi, and unwritten traditions and conventions. There is no technical difference between ordinary statutes and law considered "constitutional law"; no law is accorded higher status. In most cases the New Zealand Parliament can perform "constitutional reform" simply by passing acts of Parliament, and thus has the power to change or abolish elements of the constitution. There are some exceptions to this though – the Electoral Act 1993 requires certain provisions can only be amended following a referendum.

After decades of self-governance, New Zealand gained full statutory independence from Britain in 1947. It is a constitutional monarchy with a parliamentary democracy. The monarch of New Zealand is the head of state – represented in the Realm of New Zealand by the governor-general – and is the source of executive, judicial and legislative power, although effective power is in the hands of ministers drawn from the democratically elected New Zealand House of Representatives. This system is based on the "Westminster model", although that term is increasingly inapt given constitutional developments particular to New Zealand. For instance, New Zealand introduced a unicameral system within a decade of its statutory independence.