The history of Australia from 1788 to 1850 covers the early British colonial period of Australia's history. This started with the arrival in 1788 of the First Fleet of British ships at Port Jackson on the lands of the Eora, and the establishment of the penal colony of New South Wales as part of the British Empire. It further covers the European scientific exploration of the continent and the establishment of the other Australian colonies that make up the modern states of Australia.
After several years of privation, the penal colony gradually expanded and developed an economy based on farming, fishing, whaling, trade with incoming ships, and construction using convict labour. By 1820, however, British settlement was largely confined to a 100-kilometre (62 mi) radius around Sydney and to the central plain of Van Diemen's land. From 1816, penal transportation to Australia increased rapidly and the number of free settlers grew steadily. Van Diemen's Land became a separate colony in 1825, and free settlements were established at the Swan River Colony in Western Australia (1829), the Province of South Australia (1836), and in the Port Philip District (1836). The grazing of cattle and sheep expanded inland, leading to increasing conflict with Aboriginal people on their traditional lands.