The history of Tasmania begins at the end of the most recent ice age (approximately 10,000 years ago) when it is believed that the island was joined to the Australian mainland. Little is known of the human history of the island until the British colonization in the 19th century.
Tasmania was inhabited by an indigenous population, the Tasmanian Aborigines, and evidence indicates their presence in the territory, later to become an island, at least 35,000 years ago. At the time of the British occupation and colonisation in 1803 the indigenous population was estimated at between 3000 and 10,000. Historian Lyndall Ryan's analysis of population studies led her to conclude that there were about 7000 spread throughout the island's nine nations; Nicholas Clements, citing research by N.J.B. Plomley and Rhys Jones, settled on a figure of 3000 to 4000. The combination of the so-called Black War, internecine conflict and, from the late 1820s, the spread of infectious diseases to which they had no immunity, reduced the population to about 300 by 1833. Almost all of the indigenous population was relocated to Flinders Island by George Augustus Robinson. Until the 1970s, most people thought that the last surviving Tasmanian Aborigine was Trugernanner, who died in 1876. However this "extinction" was a myth, as documented by Lyndall Ryan in 1991.
The first reported sighting of Tasmania by a European was on 24 November 1642 by the Dutch explorer Abel Tasman, who named the island Anthoonij van Diemenslandt, after his sponsor, the Governor of the Dutch East Indies. The name was later shortened to Van Diemen's Land by the British. In 1772, a French expedition led by Marc-Joseph Marion du Fresne landed on the island. Captain James Cook also sighted the island in 1777, and numerous other European seafarers made landfalls, adding a colourful array to the names of topographical features.