Why did the moriori genocide happened?

The Moriori genocide occurred primarily due to the invasion of the Chatham Islands by Māori from New Zealand in the mid-19th century. The Māori sought land and resources, leading to violent conflicts with the indigenous Moriori people, who had a pacifist culture and did not resist militarily. As a result, many Moriori were killed or enslaved, and their population drastically declined. This tragic event highlights the impact of colonialism and inter-tribal warfare in the Pacific region.