Original sentence: A British settlement was established in Van Diemen's Land in 1803 before it became a separate colony in 1825.On 1 January 1856, the colony of Van Diemen's Land was officially changed to Tasmania.Van Diemen's Land was the original name of the island of Tasmania during the European exploration of Australia in the 19th century
Edited sentence: A British settlement was established in "Van Diemen's Land" in 1803 before it was made a separate colony in 1825.On 1 January 1856, the name of former Van Diemen's Land was officially changed to Tasmania.The Aboriginal population is estimated to have been between 3,000 and 7,000 at the time of British settlement, but was almost wiped out within 30 years during a period of conflicts with settlers known as the "Black War" and the spread of infectious diseases.The conflict, which peaked between 1825 and 1831 and led to more than three years of martial law, cost the lives of almost 1,100 Aboriginal people and settlers.Van Diemen's Land was the first name that the European invaders officially gave the island now known as Tasmania during the European exploration of Australia in the 19th century