Colonial expansion

The British continued to push into other areas of the continent in the early 19th century, initially along the coast. In 1803, a settlement was established in Van Diemen's Land (present-day Tasmania), and in 1813, Gregory Blaxland, William Lawson and William Wentworth crossed the Blue Mountains west of Sydney, opening the interior to European settlement. The British claim extended to the whole Australian continent in 1827 when Major Edmund Lockyer established a settlement on King George Sound (modern-day Albany). The Swan River Colony (present-day Perth) was established in 1829, evolving into the largest Australian colony by area, Western Australia. In accordance with population growth, separate colonies were carved from New South Wales: Tasmania in 1825, South Australia in 1836, New Zealand in 1841, Victoria in 1851, and Queensland in 1859. South Australia was founded as a "free province" — it was never a penal colony. Western Australia was also founded "free" but later accepted transported convicts, the last of which arrived in 1868, decades after transportation had ceased to the other colonies.

In 1823, a Legislative Council nominated by the governor of New South Wales was established, together with a new Supreme Court, thus limiting the powers of colonial governors. Between 1855 and 1890, the six colonies individually gained responsible government, thus becoming elective democracies managing most of their own affairs while remaining part of the British Empire. The Colonial Office in London retained control of some matters, notably foreign affairs and defence.

In the mid-19th century, explorers such as Burke and Wills went further inland to determine its agricultural potential and answer scientific questions. A series of gold rushes beginning in the early 1850s led to an influx of new migrants from China, North America and continental Europe, as well as outbreaks of bushranging and civil unrest; the latter peaked in 1854 when Ballarat miners launched the Eureka Rebellion against gold license fees.

From 1886, Australian colonial governments began introducing policies resulting in the removal of many Aboriginal children from their families and communities (referred to as the Stolen Generations).

Tasmania's Port Arthur penal settlement is one of eleven UNESCO World Heritage-listed Australian Convict Sites