Australia is separated from Indonesia by the Timor Sea and the Arafura sea.
Victoria and Tasmania are separated by Bass Strait.
In the east, Australia and Papua New Guinea are separated by Torres Strait. The Western half of the island of New Guinea is separated from Australia by the Arafura Sea,
Tasman Sea
1911 northern territory separated from south Australia.
Tasmania is separated from mainland Australia by Bass Strait.
Australia & New Zealand.
From 1825 to 1863, the Northern Territory was part of New South Wales, and from 1863 to 1911 it was part of South Australia. On 1 January 1911, the Northern Territory was separated from South Australia and transferred to Commonwealth control.
Yes, it is in Australia. Tasmania is Australia's island state. It is separated from the mainland by Bass Strait, and is located south of Victoria.
Because Australia was separated from the rest of the world so all of the flora and fauna in Australia continued to grow only in Australia.
Antarctica and Australia were separated approximately 55 million years ago, when Australia began to move north to its current position.
The Timor Sea separates Australia from Indonesia and Timor-Leste (formerly East Timor).