Timeline Activity By olivia.b 1688 william Dampier explored west cost of Australia 1770 Lieutenant James 1788 Settlement of Sydney cove in NSW 1788 The two French ships left Botany Bay 1788 the last remaining cow was killed Jan 17, 1788 Convicts disembarked at Sydney Cove helped clear the ground. Jul 9, 1791 The third fleet arrived in Sydney cove 1825 The New South Wales was extended Dec 26, 1826 New South Wales established Aug 4, 2002 My Birthday