European exploration of New Zealand began with Abel Tasman's 1642 expedition, followed by James Cook's voyages from 1769 to 1777. These expeditions charted the coastline, disproved the existence of a southern continent, and initiated sustained contact with Maori. Explorers were driven by economic interests, religious motives, scientific curiosity, and geopolitical rivalries. Their arrivals brought new technologies, diseases, and cultural exchanges, profoundly impacting Maori society and setting the stage for colonization and the formation of modern New Zealand.