Final answer:
The Aboriginal people in Australia experienced a decline in population during British settlement, with the complete decimation of the population in Tasmania. The Maori people in New Zealand also faced land loss and conflicts with settlers, but there has been a recent emphasis on respecting their rights and culture.
Step-by-step explanation:
During the British settlement in Australia, the Aboriginal people suffered a serious decline in their population. In Tasmania, the Aboriginal population was completely decimated. Only about 450,000 Aboriginal peoples remain in Australia today. In New Zealand, the native Maori people faced similar patterns of land loss and conflicts with settlers, although in recent decades, there has been a greater focus on respecting and celebrating Maori rights and culture.