Answer:
1788
Explanation:
Australia was established as a British penal colony in 1788. New South Wales which is a state in Australia was founded by the British and they took advantage of that by using the state as a place where they kept and transported criminals.
Most of the criminals transported to the region where those who were on death row and they were from different British states such as Scotland, Ireland etc.
Columbus's arrival in the America's affected the Native Americans in a very negative manner, bringing war and disease. It affected the Africans because it resulted in slavery in U.S, and it affected the Europeans by giving them new land to settle on.
Your ending the trade of slaves and ending slavery would be ending owning a slave at all.
I’m not sure have u tried looking it up