What are the regimes of Canada, New Zealand and Australia?

Canada, New Zealand and Australia all belong to the Commonwealth. The head of state is the Queen of England. The Commonwealth is a union of Britain and its former independent British colonies or dependent countries. After World War I, Britain was frightened by the rising colonial national liberation movement and adjusted its relations with other members of the former British Empire. 1926, the Inter-Imperial Relations Committee of the British Empire Conference proposed that Britain and Canada, Australia, New Zealand and South Africa, which became autonomous republics from colonies, are "members of a free association" and "have equal status in all aspects of internal affairs and foreign affairs, and are not subordinate to each other. Only by relying on the loyalty to the king of England can they unite. Canada is a constitutional democracy. The head of state is the Queen of England. Every action of the government is carried out in the name of the Queen, but the power comes from the Canadian people. 1867, when the "father of the Federation" drafted the constitution, he attributed the administrative power to the Queen and governed the country according to the principles of the British Constitution. This means establishing a responsible government, whose cabinet must be accountable to the House of Representatives, and the House of Representatives must be accountable to the people. When the Queen is not in Canada, her power is exercised by the Governor-General. The current governors are all Canadians without exception. Under normal circumstances, the candidates proposed by the Prime Minister of Canada are all appointed by the Queen as the Governor-General. Only under extremely special circumstances does the Cabinet propose the candidate for the Governor-General. The Commonwealth of Australia is a constitutional monarchy, with the Queen of Australia as the head of state and the Governor-General as her representative. But in fact, the monarch is symbolic. The executive power is controlled by the elected cabinet, and the Prime Minister is the leader of the cabinet. The Prime Minister is usually the majority leader in the House of Representatives. The Federal Parliament consists of two houses: the House of Representatives (150 seats) and the Senate (76 seats). The two houses hold general elections every three years. New Zealand is a member of the Commonwealth and has a constitutional monarchy. Her Majesty Queen Elizabeth II of New Zealand is the head of state. New Zealand is a democratic parliamentary country, which provides a safe political environment for international students, new immigrants and tourists. The Queen of England is also the head of State of New Zealand, and is currently exercised by the Governor-General. The government holds elections every three years. New Zealand citizens aged 18 or residents with permanent residency have the legal right to vote and be elected. At present, there are two main political parties in this country: the National Party and the Labour Party. The Prime Minister of New Zealand is usually the leader of the main elected political party, which holds 120 seats in Parliament. In every region, there are small local and regional governments representing the central government. These local governments are usually responsible for the management of local road traffic construction, water supply and other important affairs.