Migrating from Africa
The first humans evolved in Africa and left that continent about 100,000 years ago. They began to migrate and slowly settled most of the rest of the world. The islands of the Pacific, including New Zealand, were among the last places to be reached. It was only 3,200 years ago that people began heading eastward from Asia into the Pacific Ocean. They had great skill and courage to sail across vast stretches of open sea.
Signs of settlement
On the islands they settled, people left traces of where they had lit fires, killed animals, and brought in new animals such as rats. By studying these remains, archaeologists are able to estimate when the first settlers arrived. One of the main methods they use is radiocarbon dating, which measures the age of bones and wood.
There is a lot of evidence that Polynesian people first arrived in New Zealand around 1250–1300 AD, coming from East Polynesia in canoes.
The rat bones debate
In the 1990s some rat bones were radiocarbon dated to much earlier, around 50–150 AD. As rats are not native to New Zealand and can’t swim great distances, it was believed that they must have come with people, in canoes. So this new evidence raised the possibility that people, too, arrived at that time, but did not stay or leave any further signs. Most scientists now think this much earlier date is inaccurate.