For the countries mentioned:
-
Australia: Federal structure includes national and individual state governments, most government decisions made at the national level, led by a prime minister.
-
New Zealand: Most government decisions made at the national level, led by a prime minister (Note: New Zealand does not have a federal structure; it has a unitary system of government).
So, in summary:
- Australia → Federal structure
- New Zealand → Unitary system (led by a prime minister)