sentences:  From about 1500 Māori developed an increasing warlike culture that is believed to have its origins in climate cooling and other natural disasters which led to increasing fighting.The culmination of this was the enormous pre musket battle of Hingakaka near Te Awamutu about 1800 when 16,000 warriors took part and about 1600 died according to the Tainui historian Pei Te Hurinui-Jones.From 1805 to 1843, Māori tribes continued to fight amongst themselves during the musket wars.