The Commonwealth of Australia is a country in the southern hemisphere comprising the mainland of the world`s smallest continent, the major island of Tasmania, and a number of other islands in the Indian and Pacific Oceans. Australia has six states, two major mainland territories, and other minor territories. The capital city is Canberra. The population of Australia is approximately 21 million people and the offical language is English. Tasmania (TAS) is an Australian island and state of the same name. It is located 240 kilometres (150 mi) south of the eastern side of the continent, being separated from it by Bass Strait. The capital city of tasmania is Hobart and the population is approximately 500,000. Tasmania is known as "The Apple Isle".