Home Education Geography AustraliaEducationGeographyAustraliaAustralia officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It is the world's sixth-largest country by total area.By Watch and Study - Jun 24, 20171083 RELATED ARTICLESMORE FROM AUTHOR GeographyWhat is Azerbaijan? GeographyWhat is Armenia? GeographyWhat is Argentina? GeographyWhat is Antigua and Barbuda? GeographyWhat is Angola?Tell us what you think!