According to the author, the British conquest of this place, "changed Britian from being a country that supported colonies of its own emigres to becoming a domain that ruled other peoples?" Virginia Bengal Australia Ghana

The correct answer is likely "Australia." The British conquest of Australia in 1788 marked a significant shift in British colonial policy. Prior to this, the British had primarily supported colonies of their own emigres, such as the American colonies. However, the establishment of a penal colony in Australia was a new approach, where the British began to rule over indigenous populations and other peoples, rather than just supporting their own settlers. While Virginia was also a British colony, it was established by British emigres and did not represent the same shift in colonial policy as the British conquest of Australia. Bengal and Ghana were not British colonies at the time of the question, so they are not relevant to the context provided.