How do we know about the history of the maori ?

Because his best invention still goes around this day is sound

The ancestors of the Maori were a Polynesian people orginating from the south east Asia some historians trace the early Polynesian settlers of New Zealand as migrating from today's China making the long voyage traveling via Taiwan, through the south Pacific and on to aotearoa (New Zealand )

If u can translate that to english i will surely you!