Māori people peaceful tribes from their productive turangawaewae, such as the Moriori in the Chatham Islands by invading forces from North Taranaki, had a catastrophic effect on these conquered tribes. At the same time, the Māori suffered high mortality rates for new Eurasian infectious diseases, such as influenza, smallpox and measles, which killed an unknown number of Māori: estimates vary between ten and fifty percent. The spread of epidemics resulted largely from the Māori lacking acquired immunity to the new diseases. A huge influx of European settlers in the 1870s increased contact among many of the indigenous people with the newcomers. Te
Indigenous peoples in Brazil while a person from India is called in order to distinguish the two. At the time of European contact, some of the indigenous people were traditionally mostly semi-nomadic tribes who subsisted on hunting, fishing, gathering and migrant agriculture. Many of the estimated 2,000 nations and tribes which existed in the 16th century suffered extinction as a consequence of the European settlement, and many were assimilated into the Brazilian population. The indigenous population was largely killed by European diseases, declining from a pre-Columbian high of millions to some 300,000 (1997), grouped into 200 tribes. However, the number could be much higher