Australia

Australia is a continent located in the southern and eastern hemisphere. It is part of Oceania. Some people believe it to be it's own Continent.
The British Crown Colony of New South Wales was formed on January 26 1788 when Captain Arthur Phillip led the First Fleet to Port Jackson. The United Kingdom formally claimed southern Australia in 1828.
There was a Australian gold rush in the 1850's so that would have benefitted the United Kingdom.
The first part of severing with the United Kingdom was the Constitution January 1 1901. The final constitutional ties between Australia and the UK were severed with the passing of the Australia Act 1986, ending any British role in the government of the Australian States.
Australia has 10 of the most deadly creatures on Earth and they have the best accents. Australia is also very close to New Zealand and Tasmania.