Big Australia: Geographically & Demographically Infographic. Australia is the largest island nation on earth, and the 6th largest country by land mass (after Russia, Canada, China, USA and Brazil). Curriculum Geography.
The Department of Immigration and Border Protection (DIBP) manages and oversees Australia's Migration Program. The program has three major subdivisions, under which the various visa subclasses are categorized. Visa approval, refusal, and visa status checking are also handled by DIBP. To make this easier to understand, here's a simple infographic that explains Australia's migration system.