Complex sentence: This was at least partially due to the nature of these arrivals in the Waikato lands, who often encroached on Māori tribal lands with no formal jurisdiction or consensual purchasing or gifting of the land.
Split into simpler sentences: This was at least partially due to the nature of these arrivals in the Waikato lands. These new arrivals often encroached on Māori tribal lands with no formal jurisdiction or consensual purchasing or gifting of the land.