Some wikipedia history: Ngāpuhi: New Zealand Musket Wars
By the early 19th century, the Bay of Islands had become a prominent shipping port in New Zealand. Through increased trade with Europeans, initiated by Ruatara, Ngāpuhi gained greater access to European goods, including muskets. Armed with European firearms, Ngāpuhi, led by Hongi Hika, launched a series of expansionist campaigns, with resounding victories across Northland and in the Waikato and Bay of Plenty.
Anyway I hope you enjoy and please feel free to comment, share and follow :-)
Oh and the Empress Maori range can be found here http://www.empressminiatures.com/userimages/procart11.htm