Australia is a country located in the southern hemisphere, between the Indian Ocean and the Pacific Ocean. It is the sixth-largest country in the world by land area, covering more than 7.6 million square miles. Australia is a federal parliamentary democracy and a constitutional monarchy, with Queen Elizabeth II as its head of state. The official language of Australia is English, and the capital city is Canberra. Australia has a population of around 24 million people, and is known for its diverse culture, natural beauty, and unique wildlife. The country is home to a wide range of landscapes and climates, from the tropical rainforests of the north to the arid deserts of the center.