Original sentence: The causes were similar and the protagonists almost the same, namely, the disputed purchase of titles to land by the New Zealand Company from the Māori people, and the desire of the settlers to move on to land before disputes over said titles were resolved
Edited sentence: The  purchase of land from the Māori by the New Zealand Company, and the desire  of the settlers to move on to  land they had paid for as quickly a possibe, and the lack of resolve shown by the inexperienced governor in dealing with Te Rauparaha, a treacherous and warlike chief  were the key factors.The causes were similar and the protagonists almost the same