In which year did the last convict ship arrive in Australia?

The last convict ship arriving in Australia was the "Mark Lane," which reached its destination in 1868. This event marked the end of the transportation of convicts to Australia, a system that had been in place since the First Fleet landed in 1788. The decision to end this practice was influenced by a variety of factors, including changing attitudes towards punishment, the growing population of free settlers, and evolving legal practices. Because 1868 is the year that officially signifies the conclusion of this era, it is correctly identified as the answer to the question.