The first sentence states a fact.
The Maori people are the native people of New Zealand.
It can be proved by reading about New Zealand.
The second sentence states an opinion.
The Maori people of New Zealand have the most fascinating culture.
Most fascinating shows what a person believes, thinks, or feels. Another person might have a different opinion about what culture is the most fascinating.
Which sentence states a fact?
A: The Maori people of New Zealand have the most fascinating culture.
B: The Maori people are the native people of New Zealand.