Why did captin Cook set off on a journey?

Captain James Cook set off on his journey primarily to explore and chart the Pacific Ocean, driven by the desire for scientific discovery and navigation. His expeditions were commissioned by the British government and aimed at expanding knowledge of the region, including mapping Coastlines and establishing contact with indigenous peoples. Additionally, he sought to find a potential southern continent, which was a topic of speculation at the time. Cook's voyages significantly contributed to the advancement of cartography and understanding of the Pacific.