Answer:
There are many political similarities among the nations of Britain, Australia, and New Zealand, mainly because these three countries share a very similar culture, since two of them, Australia and New Zealand, were founded by settlers from Britain.
Step-by-step explanation:
The main political similarity is in the structure of government. These three countries have a parliamentary government structure, meaning that the parliament is the source of both executive power and legislative power. In these countries, the head of government is a prime minister, who is leader of the political party that has the most votes and power in parliament.
Another similarity is that in these three countries common law is the type of law used, in contrast with many European countries where civil law is used. Common law is characterized by a major emphasis on the decisions of judges in order to form the law itself.