Australian English - A variaty of British Englisch or a language on it's own?

Seminar paper from the year 2010 in the subject English Language and Literature Studies - Linguistics, grade: 1,3, Free University of Berlin, language: English, abstract: When Lieutenant James Cook and naturalist Sir Joseph Banks were exploring the east coast of Australia in May 1770, they suddenly saw strange animals “which must feed upon Grass [sic!], and which, we judge, could not be less tha...