It was, however, the foundation of the British colony of New South Wales which most powerfully influenced the fate of New Zealand. Communication rapidly sprang up from the beginning of the nineteenth century onwards between Sydney and New Zealand. In 1814 there arrived a party of English missionaries, under the leadership of the Rev. Samuel Marsden, which settled in the North Island. In spite of frequent disappointments and rebuffs these missionaries actually succeeded in about twenty-five years in bringing the two islands into something like a condition of peace by composing the quarrels between native tribes, many of whom became converted to Christianity. Edward Gibbon Wakefield, who had already carried out several successful colonizing experiments in South Australia, desired to do the same in New Zealand, but was opposed by the missionaries and by the British Government. He eventually succeeded in his purpose, and may almost be called the creator of the New Zealand Dominion, though he would have failed had it not been for the co-operation of that great Governor, Sir George Grey. The British Government hesitated to annex New Zealand, until forced to do so by learning that a French colonial expedition was on its way to take possession of these islands for France. New Zealand was therefore added to the British empire on 11 August, 1840. The French settlers arrived at Akaroa, in the South Island; but, in spite of the British flag having been hoisted only two days before, fifty-seven of them decided to remain, and their descendants at Akaroa now number six hundred.

Between 1835 and 1853 the French obtained some small satisfaction for their eighteenth-century explorations by establishing a protectorate over the Tahiti archipelago and annexing the large island of New Caledonia, to which possessions they subsequently added the Marquezas, the Paumotu, and Tubuai archipelagos, and the Loyalty Islands near New Caledonia. It was really French scientific expeditions which definitely discovered the Fiji archipelago, so curiously overlooked by the great British explorers. But when a French expedition, under Dumont d'Urville, examined these islands in 1827 it found them already under British influence; for from time to time convicts had escaped from the Australian penal settlement and had sought refuge in Fiji, where they had become in some cases the advisers of the native chiefs. A better influence, however, came among them in 1835, in the shape of the Wesleyan missionaries, who migrated to the Fiji archipelago from the Tonga or Friendly Islands, where they had met with complete success.

Map of Australia and New Zealand

In 1813, three explorers—Blaxland, Wentworth, and Lawson—had succeeded in pushing their way through the difficult country of the Blue Mountains in New South Wales, which although not excessively lofty had nevertheless daunted even Bass, the companion of Flinders, and discoverer of Bass's Straits. As the result of the crossing of the Blue Mountains a road was made through this mountainous region, and the pastoral interior of the eastern half of Australia was forthwith opened up. A maritime surveyor, Lieutenant John Oxley, R.N., in 1823, once more continued the exploration of Queensland. A colony—Victoria—had grown up round the great harbour of Port Phillip from 1803 onwards. Tasmania had been explored from 1803 onwards, Lieutenant Bower being the pioneer, and had been selected as a penal settlement in 1805. Hither had been removed the convicts first stationed on Norfolk Island. In 1829 the first settlement in West Australia was founded on the Swan River, where Perth, the capital of that State, now stands.

In 1828-30 Captain Charles Sturt made a remarkable overland journey from New South Wales to what is now known as South Australia, during which he discovered the Murrumbidgee, Darling, and Murray Rivers, the most important streams in Australia (Sturt also, in 1845, travelled from the banks of the Darling to the very centre of the stony, desert heart of Australia). One of the results of Sturt's first journeys was the foundation of the colony of South Australia, which began in 1836. In 1840 Edward John Eyre (long afterwards to be Governor of Jamaica under unhappy circumstances, yet to survive triumphs and troubles alike, and to die in England in 1901) travelled overland the whole way from Spencer Gulf in South Australia to King George's Sound in West Australia, and discovered the salt Lake Torrens, and caught a glimpse of the larger Lake Eyre—believing, indeed, that he had had a vision of a mighty inland sea, instead of four separate, shallow, brackish lakes. In 1844-5 Dr. F.W.L. Leichardt, a German explorer, made a wonderful journey, 3000 miles in length, from near Brisbane, in Queensland, to the Gulf of Carpentaria, and then across Arnhem land to Port Essington, in the extreme north of the continent. In 1847 Leichardt attempted to cross Australia from east to west, but got lost in the bush in the interior of Queensland, and died, probably of thirst.

After these journeys, and the further explorations of the great John M'Douall Stuart (Central Australia, and the crossing from south to north) in 1858-62; R. O'Hara Burke and W.J. Wills (also Central Australia) in 1860-1—they were the first explorers to traverse Australia from south to north; A.H. Howitt, 1861; J. M'Kinlay (South and Central Australia), 1862; W.C. Gosse (West Australia), 1873; Major P. Egerton Warburton (Central to West Australia), 1873; Sir John Forrest (Central to West Australia) in 1873-4; and Ernest Giles (West and South Australia) in 1875; the main features and characteristics of the Australian continent became known to the civilized world.

The first value attached to Australia was for its wheat-growing and cattle-rearing possibilities. Next followed, early in the nineteenth century, the introduction of merino sheep, and for forty years or so the main interests of Australia were pastoral, while the breeding of horses for the use of India ("Walers" they were called, as an abbreviation of New South Wales) became an important object of the settlers. The timber of Eucalyptus, Araucaria, and Casuarina was good enough to export; and the capacity of southern and south-eastern Australia as a vine-growing country soon became apparent. But in the middle of the nineteenth century the discovery on a large scale of gold threw all the other assets of this southern continent into the shade. Australia proved, moreover, to be rich in silver, copper, tin, precious stones, and coal, besides gold; and happily the desert and stony regions, which were quite worthless for agricultural or pastoral purposes, turned out to be better endowed with minerals than the fertile land. In 1812 the total white population in all Australia scarcely exceeded 12,000; in 1912 it is not far off 4,500,000. A hundred years ago this continent of 2,947,000 square miles was a barely known and derelict land, the coasts of which were roughly indicated on the map, the interior being completely unknown. To-day it is the home of a young, white nation, which may some day rival in power and resources the United States of North America.

As regards New Guinea, no close attention was given to the geography of that great island until the surveying expedition of H.M.S. Fly, in 1842-6, commanded by Captain F.P. Blackwood, R.N., and that of H.M.S. Rattlesnake under Captain Owen Stanley, R.N., in 1846-50. This last-named expedition included in its staff as surgeon the great professor, Thomas Henry Huxley. Huxley named the high mountains of south-east New Guinea after his commander, who died before the expedition returned to England. South-east New Guinea (Papua), the portion nearest to Australia, was annexed by Great Britain in 1884.