Who is the most influential Australian Prime Minister and Why

If you do a Google search for Australian Prime Minister Influence or, Influential, then you will probably be able to find an answer to your question as well as being able to give yourself credit for finding the answer.

Also, please see the following link.

https://www.askmehelpdesk.com/math-sciences/announcement-u-b-read-first-expectations-homework-help-board-b-u.html

Very hard to say?

Influence in what way? Our current one has been fairly influential. He has put us in wars the public don't want.

Gough Whitlam was a very influential Prime Minister. Sir Robert Menzies, Paul Keating of recent times.

Have a look at Wikipedia and see what you can come up with. It is a very broad question.

Mind you George Bush has been a pretty influential "Australian" leader too. ;)