How did James Cook’s first voyage change knowledge of New Zealand and eastern Australia?

James Cook’s first voyage (1768–1771) significantly advanced European geographical knowledge of the Pacific by replacing speculation with precise, systematic cartography.

Regarding New Zealand, Cook completed the work begun by Abel Tasman by circumnavigating both major islands. His charts were remarkably accurate, and his detailed journals provided Europeans with their first systematic observations of Māori life, culture, and the land's potential for colonization.12

In Australia, Cook’s expedition reached the southeastern coast in 1770, an area previously unknown to Europeans. He surveyed approximately 2,000 miles of the eastern coastline, successfully navigating the Great Barrier Reef and the Torres Strait. By claiming the region as New South Wales, he defined the limits of the continent's eastern side. The scientific findings brought back by his naturalist, Joseph Banks, were instrumental in stimulating British interest in the region, eventually leading to the establishment of permanent settlements on the Australian coast.3425