What indegenous group lived in New Zealand

Māori

Explanation:

Māori is the Tangata Whenua, the indigenous people, of New Zealand. They came here more than 1000 years ago from their mythical Polynesian homeland of Hawaiki. Today, one in seven New Zealanders identify as Māori. Their history, language and traditions are central to New Zealand's identity.

Hope it helped

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.