6/ The administrative organisation of Australia π¦πΊ is complex, with 6 states, 3 internal territories, and 7 external territories. The internal divisions have changed several times as the population grew.
All the details are over on Wikipedia
https://en.wikipedia.org/wiki/Territorial_evolution_of_Australia
7/ As you can see in the map, New Zealand π³πΏ was originally part of the colony of New South Wales, and was later invited to join Australia as a state.
New Zealand said no.
https://nzhistory.govt.nz/page/nz-says-no-aussie-federation
#geoweirdness