As stated, New Zealand belonged to the Maoris before anyone else. The Dutch explorer Abel Tasman first found the lands and annexed it as Holland in 1642. This name was later changed to New Zealand. Tasman was in search of a great land to the south which was rich in minerals. There was also a skirmish once Tasman touched the shore and the battle saw the death of four of his men. He could walk the lands and was quick to sail back home and his mission to find a great land was deemed unsuccessful by the Dutch East India Company.
Captain James Cook, who was overseeing the transit of Venus from Tahiti also had the same mission as Tasman. He spotted and mapped the continent before leading two more missions in New Zealand. He later died in 1779.
The British Colonised the lands during 1840 by establishing the Treaty of Waitangi which was made in consultation with the Maoris. This treaty is also considered as one of the founding pillars of the country. Before 1840 New Zealand only saw sailors, whalers and missionaries. On arrival, the Europeans also traded with the native Maoris and gave them guns. The inter tribal wars then started seeing many deaths which led to the fall in Maori population.