Britain.
A Soviet diplomat claimed his country was spying on Australia
Australia did not 'join' the British Empire, the British was the first westerners who set foot on Australia. They stuck the Union Jack down, and claimed Australia as theirs.
Captain Cook claimed Australia for Great Britain in 1770
Van Diemen's Land remained the name of the island colony south of Australia until 1 January 1856, when Queen Victoria approved a petition to rename the island Tasmania, in honour of its discoverer.
James Cook claimed Australia for Great Britain.
In 1770, Lieutenant James Cook (not yet a Captain) claimed "New South Wales", which was actually Australia's eastern half, for Britain. He claimed the east coast under instruction from King George III of England, but did not claim the western half.He also claimed New Zealand for Great Britain.
Australia
(Lieutenant) James Cook claimed the east coast of Australia for Great Britain in 1770.
Sir Mawson claimed land from Antarctica to Australia.
James Cook
Britain.
A discoverer of salt is not known.
who is the discoverer of protein
In 2002 the Australian Bureau of statisitics claimed that there were 9632 schools in Australia of which 6969 were state schools.
it was claimed by Britain, U.S.,Spain,and Russia
That is the correct spelling of the noun "discoverer" (one who discovers or locates).You spelled discoverer correctly.