Original sentence: Some historians have argued that the invaders has been dispossessed of their land in Taranaki by invading hapu from the north, and desperately needed land.The two waves arrived on Chatham island and Pitt island, in November and December (with the second having 400 armed warriors), and despite a warm welcome from local Moriori, immediately began either killing, cannibalising or enslaving the peaceful Moriori
Edited sentence: The invaders were self-radicalised having been previously dispossessed of their land in Taranaki by invading hapu from the north, some historians have argued that they desperately needed land, and could no longer live in extreme poverty on the outskirts of Wellington.The two waves arrived on Chatham island and Pitt island, in November and December (with the second having 400 armed warriors), and despite a warm welcome from local Moriori, immediately began either killing, cannibalising or enslaving the peaceful Moriori "like sheep".These historians conclude this is likely what led to them committing the genocide