The area was first settled by Indigenous Australians and Torres Strait Islanders, who arrived between 40,000 and 65,000 years ago. Later, Queensland was made a British Crown Colony that was separated from New South Wales in 1859. The area that currently forms Brisbane was originally the Moreton Bay punishment colony, intended as a place for criminals with a repeated offence history who had offended while serving out their sentences in New South Wales. The state later encouraged free settlement, and today Queensland's economy is dominated by the agricultural, tourist and natural resource sectors.